HARKEN 40mm Carbo Air® Single Block with Becket, 2637 Blocks_Carbo Air Blocks Toggle cars have low pivot

Toggle cars have low pivot points (for efficient load transfer) and let you fasten mainsheet and control blocks directly to the block swivel post

raising the cleat off the spar to improve the cleating angle and control

The 40mm cam-arm versions work in ratchet mode only

Other features include an adjustable back support

HARKEN 40mm Carbo Air® Single Block with Becket, 2637 Blocks_Carbo Air Blocks Toggle cars have low pivotThe Harken 40mm Carbo Air Single Block includes an integral becket that allows either a 2: 1 or 3: 1 purchase. Low friction Carbo AirBlocks are lightweight, strong, reliableand economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The side plates are UV stabilized, high strength resin and designed for small diameter lines favored by racers. Good for jib and mainsheet systems on high performance dinghies, and for high