HARKEN 57 mm Power3 Ratchamatic Block, 2625 Small Blocks_29mm Use cam swivel bases when

Use cam swivel bases when leads must rotate to face the trimmer

5") and 51 mm (2") wire blocks feature sideload balls between the sheave and the side plate to minimize friction from unfair leads

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

Designed for vangs

HARKEN 57 mm Power3 Ratchamatic Block, 2625 Small Blocks_29mm Use cam swivel bases whenEase that sheet smoothly out in the lightest air, and get an automatic ratchet block when it's a breeze on. Shifting between ratchet and light air modes is seamless. Harken 57mm Carbo Ratchamatic Single Block rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. The 57mm load sensing Carbo Ratchamatic is adjustable for many applications and line loading conditions. With a 180 degree wrap, you get a