{"title":"Ronstan Series 30 Sailing Blocks","description":"\u003cp\u003eCompare Ronstan Series 30 sailing blocks in the listed single, multiple-sheave, becket and mounting configurations. Match line size and load information to the individual block.\u003c\/p\u003e\u003cp\u003eReview the individual product dimensions, manufacturer model and included components before selecting your installation.\u003c\/p\u003e","products":[{"product_id":"ronstan-series-30-block-single-narrow-55128","title":"Ronstan Series 30 Block - Single - Narrow MPN - RF185","description":"\u003cp\u003e\u003cstrong\u003eSeries 30 Block - Single - Narrow\u003c\/strong\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLightweight durable construction\u003c\/li\u003e\n\u003cli\u003eEconomical\u003c\/li\u003e\n\u003cli\u003eMaintenance free\u003c\/li\u003e\n\u003cli\u003eHollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase\u003c\/li\u003e\n\u003cli\u003eStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVang, cunningham and trapeze retriever systems on dinghies\u003c\/li\u003e\n\u003cli\u003eLeech line tackles, bunk adjusters etc on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eU.V. Stabilized Acetal sheaves\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel cheeks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSheave Ø:\u003c\/strong\u003e29mm(1-1\/8\")\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMax. Rope Ø:\u003c\/strong\u003e8mm(5\/16\")\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eM.W.L.:\u003c\/strong\u003e300kg(660lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eB. L.:\u003c\/strong\u003e900kg(1,980lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e20g(0.7oz)\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385922310306,"sku":"55128","price":23.77,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55128XL.jpg?v=1765315616"},{"product_id":"ronstan-series-30-fiddle-block-narrow-w-tube-rivot-head-55129","title":"Ronstan Series 30 Fiddle Block - Narrow with Tube Rivot Head MPN - RF186","description":"\u003cp\u003e\u003cstrong\u003eSeries 30 Fiddle Block - Narrow with Tube Rivet Head\u003c\/strong\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLightweight durable construction\u003c\/li\u003e\n\u003cli\u003eEconomical\u003c\/li\u003e\n\u003cli\u003eMaintenance free\u003c\/li\u003e\n\u003cli\u003eHollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase\u003c\/li\u003e\n\u003cli\u003eStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVang, cunningham and trapeze retriever systems on dinghies\u003c\/li\u003e\n\u003cli\u003eLeech line tackles, bunk adjusters etc on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eU.V. Stabilized Acetal sheaves\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel cheeks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSheave Ø:\u003c\/strong\u003e29mm(1-1\/8\")\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMax. Rope Ø:\u003c\/strong\u003e8mm(5\/16\")\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eM.W.L.:\u003c\/strong\u003e300kg(660lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eB. L.:\u003c\/strong\u003e600kg(1,320lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e50g(1.8oz)\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385922408610,"sku":"55129","price":39.83,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55129XL.jpg?v=1765315619"},{"product_id":"ronstan-series-30-fiddle-block-narrow-w-tube-rivet-head-v-jam-cleat-55130","title":"Ronstan Series 30 Fiddle Block - Narrow with Tube Rivet Head \u0026 V-Jam Cleat MPN - RF187","description":"\u003cp\u003e\u003cstrong\u003eSeries 30 Fiddle Block - Narrow with Tube Rivet Head \u0026amp; V-Jam Cleat\u003c\/strong\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLightweight durable construction\u003c\/li\u003e\n\u003cli\u003eEconomical\u003c\/li\u003e\n\u003cli\u003eMaintenance free\u003c\/li\u003e\n\u003cli\u003eAllows fast, sure cleating of control lines\u003c\/li\u003e\n\u003cli\u003eHollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase\u003c\/li\u003e\n\u003cli\u003eStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVang, cunningham and trapeze retriever systems on dinghies\u003c\/li\u003e\n\u003cli\u003eLeech line tackles, bunk adjusters etc on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eU.V. 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L.:\u003c\/strong\u003e600kg(1,320lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e60g(2.1oz)\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385922441378,"sku":"55130","price":45.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55130XL.jpg?v=1765315619"},{"product_id":"ronstan-series-30-block-single-loop-top-55161","title":"Ronstan Series 30 Block - Single - Loop Top MPN - RF280","description":"\u003cp\u003e\u003cstrong\u003eSeries 30 Block - Single - Loop Top\u003c\/strong\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaintenance free\u003c\/li\u003e\n\u003cli\u003eEconomical\u003c\/li\u003e\n\u003cli\u003eLightweight durable construction\u003c\/li\u003e\n\u003cli\u003eStainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance\u003c\/li\u003e\n\u003cli\u003eHollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVang, cunningham and trapeze retriever systems on dinghies\u003c\/li\u003e\n\u003cli\u003eLeech line tackles, bunk adjusters etc on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUV Stabilized Acetal sheave\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel cheeks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSheave Ø:\u003c\/strong\u003e29mm(1-1\/8\")\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMax. Rope Ø:\u003c\/strong\u003e8mm(5\/16\")\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eM.W.L.:\u003c\/strong\u003e300kg(660lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eB. L.:\u003c\/strong\u003e600kg(1,320lbs)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e20g(0.7oz)\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp data-empty=\"true\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385924735138,"sku":"55161","price":14.57,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55161XL.jpg?v=1765315653"},{"product_id":"ronstan-series-30-ball-bearing-block-single-loop-top-55171","title":"Ronstan Series 30 Ball Bearing Block - Single - Loop Top MPN - RF30101","description":"\u003cb\u003eSeries 30 Ball Bearing Block - Single - Loop Top\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLow friction 2-stage ball bearing system provides consistent performance over the full working load range\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh static and dynamic load capacity\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLight weight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVersatile head fittings\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSheaves running on Acetal or Torlon® ball bearings provide high performance \u0026amp; low friction \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan be fitted with a shackle in either of two planes to allow correct alignment of the block\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003ePrimary lead blocks on dinghies and catamarans\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl lines on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eU.V. stabilized Acetal sheaves\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAcetal ball bearings\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eImpact modified, fiber reinforced and U.V. stabilized Nylon cheeks\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel load straps and head fittings\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. Rope Ø:\u003c\/b\u003e\t8mm(5\/16\")\u003cbr\u003e\u003cb\u003eM.W.L.:\u003c\/b\u003e\t300kg(660lbs)\u003cbr\u003e\u003cb\u003eB. L.:\u003c\/b\u003e\t750kg(1,650lbs)\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\t28g(1.0oz)\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385925488802,"sku":"55171","price":25.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55171XL.jpg?v=1765315667"},{"product_id":"ronstan-series-30-ball-bearing-orbit-block-single-becket-swivel-shackle-head-55173","title":"Ronstan Series 30 Ball Bearing Orbit Block™ - Single - Becket - Swivel Shackle Head MPN - RF35100","description":"\u003cb\u003eSeries 30 Ball Bearing Orbit Block - Single  - Becket - Swivel Shackle Head\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra low profile thru-sheave becket\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow friction 2-stage ball bearing system provides consistent performance over the full working load range\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. Rope Ø:\u003c\/b\u003e\t8mm(5\/16\")\u003cbr\u003e\u003cb\u003eM.W.L.:\u003c\/b\u003e\t300kg(660lbs)\u003cbr\u003e\u003cb\u003eB. L.:\u003c\/b\u003e\t600kg(1,320lbs)\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\t32g(1.1oz)\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385925652642,"sku":"55173","price":28.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55173XL.jpg?v=1765315670"},{"product_id":"ronstan-series-30-ball-bearing-orbit-block-single-becket-lashing-head-55174","title":"Ronstan Series 30 Ball Bearing Orbit Block™ - Single - Becket - Lashing head MPN - RF35101","description":"\u003cb\u003eSeries 30 Ball Bearing Orbit Block - Single  - Becket - Lashing Head\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra low profile thru-sheave becket\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF35101 accepts RF1850S shackle in both orientations to create a conventional loop top block\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSelf-lubricating Nylatron® sheave and full contact bearing for high dynamic loads\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e=\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. Rope Ø:\u003c\/b\u003e\t8mm(5\/16\")\u003cbr\u003e\u003cb\u003eM.W.L.:\u003c\/b\u003e\t300kg(660lbs)\u003cbr\u003e\u003cb\u003eB. L.:\u003c\/b\u003e\t600kg(1,320lbs)\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\t22g(0.8oz)\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385925685410,"sku":"55174","price":20.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55174XL.jpg?v=1765315670"},{"product_id":"ronstan-series-30-ball-bearing-orbit-block-cheek-55176","title":"Ronstan Series 30 Ball Bearing Orbit Block™ - Cheek MPN - RF35151","description":"\u003cb\u003eSeries 30 Ball Bearing Orbit Block - Cheek\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. Rope Ø:\u003c\/b\u003e\t8mm(5\/16\")\u003cbr\u003e\u003cb\u003eM.W.L.:\u003c\/b\u003e\t300kg(660lbs)\u003cbr\u003e\u003cb\u003eB. L.:\u003c\/b\u003e\t600kg(1,320lbs)\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\t21g(0.7oz)","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385925783714,"sku":"55176","price":22.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55176XL.jpg?v=1765315673"},{"product_id":"ronstan-series-30-ball-bearing-orbit-block-stand-up-swivel-55175","title":"Ronstan Series 30 Ball Bearing Orbit Block™ - Stand Up Swivel MPN - RF35140","description":"\u003cb\u003eSeries 30 Ball Bearing Orbit Block - Stand Up Swivel\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. Rope Ø:\u003c\/b\u003e\t8mm(5\/16\")\u003cbr\u003e\u003cb\u003eM.W.L.:\u003c\/b\u003e\t300kg(660lbs)\u003cbr\u003e\u003cb\u003eB. L.:\u003c\/b\u003e\t600kg(1,320lbs)\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\t33g(1.2oz)\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385925816482,"sku":"55175","price":36.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55175XL.jpg?v=1765315673"},{"product_id":"ronstan-series-30-ball-bearing-orbit-block-double-55177","title":"Ronstan Series 30 Ball Bearing Orbit Block™ - Double MPN - RF35202","description":"\u003cb\u003eSeries 30 Ball Bearing Orbit Block - Double\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. Rope Ø:\u003c\/b\u003e\t8mm(5\/16\")\u003cbr\u003e\u003cb\u003eM.W.L.:\u003c\/b\u003e\t450kg(990lbs)\u003cbr\u003e\u003cb\u003eB. L.:\u003c\/b\u003e\t900kg(1,980lbs)\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\t50g(1.7oz)\u003cbr\u003e\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":46385925914786,"sku":"55177","price":48.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/55177XL.jpg?v=1765315675"},{"product_id":"ronstan-series-30-ball-bearing-orbit-block-triple-55178","title":"Ronstan Series 30 Ball Bearing Orbit Block™ - Triple MPN - RF35302","description":"\u003cb\u003eSeries 30 Ball Bearing Orbit Block - Triple\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eBall Bearing Orbit Blocks boast the highest strength-to-weight ratio available.  This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. 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This is achieved through all-composite reinforced polymer materials and multiple attachment options.  \u003cbr\u003eTheir precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eLightweight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHighest working load in its class\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecure, versatile and secure attachement\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow profile and compact\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApplications:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems and spinnaker sheets on dinghies to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHalyard, vang and backstay applications on boats to 5M(16')\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMaterials:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eSheave: High compression strength carbon black Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBall Bearings: High compression strength Acetal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrame\/Cheeks: Toughened, glass fiber reinforced Nylon\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLink: UV stabilized, multi-strand impregnated SK75 Dyneema®\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eSheave Ø:\u003c\/b\u003e\t30mm(1-3\/16\")\u003cbr\u003e\u003cb\u003eMax. 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