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Harken 40mm Carbo Single Ratchet Block w/Swivel & Becket MPN-2609 SKU: CWR-84450
MPN: 2609- $109.89
$99.90- $109.89
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40mm Carbo Single Ratchet Block with Swivel & BecketCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switches. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Maximum line...- $109.89
$99.90- $109.89
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Harken 40mm Carbo Single Ratchet Block w/Swivel Becket & Cam Cleat MPN-2610 SKU: CWR-84451
MPN: 2610- $214.04
$194.58- $214.04
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40mm Carbo Single Ratchet Block with Swivel Becket & Cam CleatCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Maximum line Ø (mm): 6 mm Maximum...- $214.04
$194.58- $214.04
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Harken 40mm Carbo Single Ratchet Block w/Swivel MPN-2608 SKU: CWR-84449
MPN: 2608- $101.46
$92.24- $101.46
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40mm Carbo Single Ratchet Block with SwivelCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switches. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Maximum line Ø (mm):...- $101.46
$92.24- $101.46
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Harken 40mm Carbo Block 90° Fixed Head MPN-2659 SKU: CWR-84448
MPN: 2659- $59.40
$54.00- $59.40
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40mm Carbo Block 90° Fixed HeadLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave Ø (in):...- $59.40
$54.00- $59.40
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Harken 40mm Carbo Block w/Spring & Eyestrap MPN-2652 SKU: CWR-84447
MPN: 2652- $58.67
$53.34- $58.67
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40mm Carbo Block with Spring & EyestrapLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave Ø...- $58.67
$53.34- $58.67
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Harken 40mm Carbo Single Fixed Block MPN-2650 SKU: CWR-84446
MPN: 2650- $43.65
$39.68- $43.65
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40mm Carbo Single Fixed BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16...- $43.65
$39.68- $43.65
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Harken 40mm/29mm Carbo Traveler Block MPN-2649 SKU: CWR-84445
MPN: 2649- $69.23
$62.94- $69.23
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40mm/29mm Carbo Traveler BlockLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in...- $69.23
$62.94- $69.23
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Harken 40mm Carbo Block Single w/Swivel & Bracket MPN-2637 SKU: CWR-84444
MPN: 2637- $62.03
$56.39- $62.03
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40mm Carbo Block Single with Swivel & BracketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm): 40 mm Sheave...- $62.03
$56.39- $62.03
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Ronstan S70 Soft Attachment Block - Single MPN-RF77109 SKU: CWR-83729
MPN: RF77109- $1,211.60
$1,101.45- $1,211.60
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S70 Soft Attachment Block - SingleEasy to attach and easy to open, Ronstan's soft attachment snatch blocks are built to perform and built to last.With the shackle open, cheek plates twist to open the block and a spring loaded ball secures the assembly when...- $1,211.60
$1,101.45- $1,211.60
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Ronstan S60 Soft Attachment Block - Single MPN-RF67109 SKU: CWR-83728
MPN: RF67109- $738.05
$670.95- $738.05
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S60 Soft Attachment Block - SingleEasy to attach and easy to open, Ronstan's soft attachment snatch blocks are built to perform and built to last.With the shackle open, cheek plates twist to open the block and a spring loaded ball secures the assembly when...- $738.05
$670.95- $738.05
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Ronstan S40 Soft Attachment Block - Single MPN-RF47109 SKU: CWR-83727
MPN: RF47109- $426.20
$387.45- $426.20
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S40 Soft Attachment Block - SingleEasy to attach and easy to open, Ronstan's soft attachment snatch blocks are built to perform and built to last.With the shackle open, cheek plates twist to open the block and a spring loaded ball secures the assembly when...- $426.20
$387.45- $426.20
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Ronstan Series 20 BB Block Single Becket Option Lashing High Load MPN-RF25109HL SKU: CWR-83499
MPN: RF25109HL- $90.48
$82.25- $90.48
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Series 20 BB Block Single Becket Option Lashing High LoadFeatures: Suits up to 4mm (5/32”) lashing Supplied with 750mm (30”) x 2mm (3/32”) diameter, Dyneema® single braid lashing line- $90.48
$82.25- $90.48
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Schaefer Series 7 Stand Up Ball Bearing Swivel Block - 2-3/8" 60mm MPN-706-62 SKU: CWR-83393
MPN: 706-62- $292.27
$265.70- $292.27
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Series 7 Stand Up Ball Bearing Swivel Block - 2-3/8" 60mmSingle stand up ball bearing block. Stand up spring keeps block upright when not in use. Stainless steel base spreads load out and may be used with 97-49 backing plate. (sold separately) Delrin(tm) ball...- $292.27
$265.70- $292.27
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Barton Marine Series 5 Fiddle, Snap Shackle, Becket & Cam Block - 54mm MPN-N05 641 SKU: CWR-82888
MPN: N05 641- $252.30
$229.36- $252.30
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Series 5 Fiddle, Snap Shackle, Becket & Cam Block - 54mmPlain Bearing BlocksBarton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Specifications Sheave size: 54mm x 17mm Max rope...- $252.30
$229.36- $252.30
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Barton Marine Series 5 Fiddle Swivel Block - 54mm MPN-N05 430 SKU: CWR-82887
MPN: N05 430- $80.29
$72.99- $80.29
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Series 5 Fiddle Swivel Block- 54mmPlain Bearing BlocksBarton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Specifications Sheave size: 54mm x 17mm Max rope diameter: 12mm Safe working load:...- $80.29
$72.99- $80.29
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Barton Marine Series 5 Fiddle, Swivel, Becket, and Cam Block - 54mm MPN-N05 631 SKU: CWR-82884
MPN: N05 631- $149.59
$135.99- $149.59
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Series 5 Fiddle, Swivel, Becket, and Cam Block - 54mmPlain Bearing BlocksBarton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Specifications Sheave size: 54mm x 17mm Max rope diameter:...- $149.59
$135.99- $149.59
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Barton Marine Series 5 Fiddle Reverse Shackle Block - 54mm MPN-N05 420 SKU: CWR-82883
MPN: N05 420- $70.39
$63.99- $70.39
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Series 5 Fiddle Reverse Shackle Block - 54mmPlain Bearing BlocksBarton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Specifications Sheave size: 54mm x 17mm Max rope diameter: 12mm Safe...- $70.39
$63.99- $70.39
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Barton Marine Series 5 Single Snap Shackle Block - 54mm MPN-N05 140 SKU: CWR-82881
MPN: N05 140- $153.04
$139.13- $153.04
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Series 5 Single Snap Shackle Block - 54mmPlain Bearing BlocksBarton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Specifications Sheave size: 54mm x 17mm Max rope diameter: 12mm Safe...- $153.04
$139.13- $153.04
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Barton Marine Series 3 Single Snap Shackle & Becket Block - 45mm MPN-N03 141 SKU: CWR-82871
MPN: N03 141- $111.82
$101.65- $111.82
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Series 3 Single Snap Shackle & Becket Block - 45mmPlain Bearing BlocksBarton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.Specifications Sheave size: 45mm x 13mm Max rope diameter:...- $111.82
$101.65- $111.82
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Harken 60mm Triple Aluminum Element Block w/Swivel & Becket MPN-6273 SKU: CWR-80430
MPN: 6273- $245.18
$222.89- $245.18
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60mm Triple Aluminum Element Block with Swivel & BecketElement blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven...- $245.18
$222.89- $245.18
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Frequently Asked Questions
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Repack bearings annually or every 10,000 miles with marine-grade grease to prevent water intrusion and seizing. Check for play or heat after each launch.
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Hubs are sized by axle spindle (1-1/16", 1-3/8", 1-3/4"); match brake type (electric/drum/hydraulic) and bolt pattern (4/5/6 on 4.5-6.5" centers).
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Transom savers, tie-down straps, and fenders protect hulls during towing; LED light kits ensure visibility, while bunks/rollers reduce launch friction.
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Use bow/stern straps rated for 2x boat weight, cross-strap hull sides, and check bunks for even weight distribution to avoid stress cracks.
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Choose 1,200-2,000 lb capacity for tongue weights up to 10% of trailer GVWR; crank or A-frame jacks for easy boat positioning.