HARKEN 75mm Quadruple Carbo Block - Swivel, 2677 Deck Organizers_2 Sheave Deck Organizers Base plate ensures optimal cleating

Base plate ensures optimal cleating height

Fixed lead blocks feature Delrin ball-bearing sheaves with stainless steel cheeks for a strong yet smooth lead

An innovative sliding mechanism controls the shackle post swivel

Synchro blocks combine geometry

Synchro blocks use a larger sheave that features the Free Spin bearing

HARKEN 75mm Quadruple Carbo Block - Swivel, 2677 Deck Organizers_2 Sheave Deck Organizers Base plate ensures optimal cleatingHarken 75mm Carbo Air Quad Block allows either a high load purchase of 5: 1 to 6: 1. Low friction Carbo AirBlocks are lightweight, strong, reliable, and economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The sideplates 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 load control lines on small