ALLEN Pro ratchet block, aluminum, 40mm, 6mm cable, switchable, swivel shackle

ALLEN PRO Ratchet Pro-Ratchet blocks features an internal switchable ratchet mechanism which only allows the sheave to turn in one direction. This gives the user more control and precise feel to make incremental adjustments to hand-held lines such as jib or mainsheets. An additional switch at the top of the block can be used to lock the swivel in 90-degree orientations or set to 360° free rotation (for HA2150/HA2160)