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Carbo Air Blocks

Carbo Air Blocks

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Lightweight nylon resin sideplates replace stainless steel straps found in Classic blocks. Densely packed glass fibers reinforce resin for strength.


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Low-friction efficiency for fast trim and release

Free-running ball bearings roll on curved races, efficiently dispersing load for a higher strength block.

Shackle blocks lock in two directions or swivel to keep line from twisting

Cam-Lock or U-Lock allows shackle to be fixed or to swivel.

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Harken US Offices will be closed Thursday November 24th & Friday November 25th. Any orders placed after 12pm CST Wednesday November 23rd will be processed upon re-opening on Monday November 28th.