Harken's Carbo AirBlocks® are 60% stronger and 30% lighter than Classic blocks. The nylon-resin sideplates are densely packed with long glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave, and sideplates are UV-stablized for maximum protection.
The high-load 75mm Carbo has a broad working range. It releases easily under load and is perfect for mainsheet systems on sport boats like the Melges 24, J/105, and Henderson 30.
Swivel blocks can lock in two directions or spin freely to avoid lines twisting. Reversible cam arms.
|Sheave Diameter||2 5/16 in||75 mm|
|Max Line Diameter||1/2 in||12 mm|
|Max Working Load||600 lb||272 kg|
|Breaking Load||1,500 lb||680 kg|
|Shackle Pin Diameter||N/A||6 mm|
|Weight w/ Shackle||14 oz||397 g|
|Length||6 1/2 in||165 mm|
**Maximum working loads and breaking loads for blocks based on cam strengths