Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's classic blocks. Use the 40mm 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 are UV stabilized with black additive for maximum protection.
Specifications: 485 lb. SWL; 1620 lb. breaking strength; 3/8" maximum line diameter; 5/32" shackle pin diameter; 1-9/16" sheave diameter; 3-3/8" long. Harken #2636. Special order item.