Blocks - Double

Harken Black Magic Air Block - 75mm Aluminium Double Block with Swivel Black Magic Air blocks are a top favourite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots...

Harken 75mm Aluminium Double Footblock - Lockoff Use footblocks to redirect lines on the deck. Footblocks with lock-offs temporarily secure sheets. Either metric or imperial flathead fasteners may be used for mounting and are not exposed. Sideplates and...

Ronstan 8-1 & 40-1 Two-Speed Mainsheet Bottom Blocks Only Bottom blocks for RF72900 two-speed system Features Coarse and and fine tuning purchase system. Unrivalled 18:1 holding power. Dual sided On-Off switch. Low friction ball...

SPECIAL ORDER ITEM. ALLOW 6-8 WEEKS FOR DELIVERY. Lewmar Racing Double Block - designed and manufactured utilising monocoque construction techniques to produce a quality block range with a high strength to low weight ratio. Radiused alloy cheeks with...

Harken 57mm Aluminium Double Loop Block Part Number Sheave Dia. Weight Max. Line Dia. Max. Working Load Breaking Load HKN-3386 57mm 168g 12mm 1134kg 2268kg

Ronstan 8-1 & 4-1 Two-Speed Mainsheet Top Blocks Only Top blocks for RF72900 two-speed system Features Coarse and and fine tuning purchase system. Unrivalled 18:1 holding power. Dual sided On-Off switch. Low friction ball...

Harken 57mm Aluminium Double Block - Swivel, Becket Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action:...

Harken 57mm Double Over-The-Top Block Over-the-top blocks lead lines aft over cabin houses, coamings, and splashguards. Part Number Sheave Dia. Length Width Weight Max. Working Load Breaking Load Number of...

Harken 57mm Aluminum Double Block - Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner,...

Harken 57mm Aluminium Low-Load Double Block - Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action:...

Ronstan 6-1 & 3-1 Two-Speed Mainsheet Top Blocks Only Top blocks for RF72700 two-speed system   Mainsheets on sportsboats and keelboats to 12m (40')Max. mainsail area, END boom sheeting = 38sq m (409 sq ft). Max. mainsail area, MID boom...

A balanced design approach incorporating functionality, performance and style makes the Series 100 Core Blocks™ the right choice for performance cruising or racing applications. A full contact bearing provides excellent performance across the full...

Harken Aluminium Double Footblock - 57mm, 75mm Use footblocks to redirect lines on the deck. Footblocks with lock-offs temporarily secure sheets. Either metric or imperial flathead fasteners may be used for mounting and are not exposed. Sideplates and...

The Carbo Ratchamatic is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Use the 2634 with a 402 or 403...

Harken 80mm Aluminium Element Double Footblock Element 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...

Mid range blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Note: DO NOT use Harken equipment...

Harken 80mm Aluminium Element Double Block - Swivel, Becket Element 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...

Midrange block robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Note: DO NOT use Harken equipment for...

Harken Double Fiddle Block 3" - Swivel Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use less line than traditional gross-trim/fine-tune...

Harken 80mm Aluminium Element Double Block - Swivel Element 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...