HARKEN Unit 1 Head Swivel, 7351.28 Sailboat Blocks & Hardware_57 mm Triple Carbo Block - Swivel and big boat sheaves are

and big boat sheaves are removable stainless steel

easy adjustments

This 29mm cheek block with a curved base is ideal for mast-mounted turning blocks

and a unique Free Spin bearing to deliver performance that’s comparable to ball and roller bearing blocks used in racing but at a more affordable price

Sheave runs exclusively on a ball-bearing system for fast trim and release under any load

HARKEN Unit 1 Head Swivel, 7351.28 Sailboat Blocks & Hardware_57 mm Triple Carbo Block - Swivel and big boat sheaves areUse with the Harken Reflex furling system. Head and tack swivels are permanently fitted to each sail. The integral thimble terminal for torsion cable saves weight; no fork, eye, or pin connections. Compact design reduces weight aloft, maximizes luff length. A padded cover prevents damage to spars. Use with furling unit Reflex Unit 1