Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's classic blocks. Use the 40 mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.
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 UV stabilized with black additive for maximum protection.
Specifications: 1-9/16" sheave diameter; 3-11/16" long; weighs 6 oz.; 3/16" shackle pin diameter; 3/8" maximum line diameter; 1455 lb. maximum working load; 3050 lb. breaking load. Special order item.