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Harken 57mm Swivel 5 Sheave Carbo Airblock

$201.40 $176.99
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Harken 57mm Swivel 5 Sheave Carbo Airblock

Harken Carbo AirBlocks® are 60% stronger and 30% lighter than Harken Classic Blocks. The nylon resin sideplates are densely packed with long glass fibers for a compact block with a high strength-to-weight ratio. Ball bearings, sheave and sideplates are UV stabilized with carbon black for maximum protection.

The high load 57mm Carbo has a broad working range. Use for main and jib sheets on centerboard and keelboats like Lightnings, Dragons, Solings, and J/24s, and for mainsheet systems on catamarans.



  Imperial Metric
Sheave Diameter 2 1/4 in 57 mm
Max Line Diameter 7/16 in 10 mm
Max Working Load 2,380 lb 1,080 kg
Breaking Load 5,000 lb 2,270 kg
Shackle Pin Diameter -- 6 mm
Weight w/ Shackle 15.8 oz 448 g
Length 4 3/4 in 121 mm