57 mm Carbo blocks with swivel and clamp

Carbo AirBlocks® are 60% stronger and 30% lighter than our Classic blocks. The nylon resin stringers are reinforced with densely layered long glass fibers to create a compact block with a high load-to-mass ratio. Ball bearings, disk and cheeks are blackened for maximum UV protection. The blocks are equipped with Cam-Lock or U-Lock locking to fix the shackle in frontal or lateral position, or to let it rotate freely. 57mm The hi-load 57mm Carbo has a wide range of applications, for mainsheet and foresheet on dinghies and keelboats such as Lightning, Dragon, Soling, J/24, and for mainsheet systems on catamarans. Application: Mainsheet/jib sheet Fine trim Mainsheet control lines Downhaul Cunningham foot stretcher