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.
|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|