HARKEN Standard Cam Cleat Mast/Boom Adapter, 438 Hole Sizes_12 mm 5") and 51 mm (2")

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

The load-sensing ratchet block rolls freely in both directions under low loads

The sideplates are UV-stabilized

Companions to the popular Harken Black Magic block line

RaceLube uses HD22 to provide the ideal viscosity to protect aluminum and stainless steel components and allow quick engagement and smooth operation

HARKEN Standard Cam Cleat Mast/Boom Adapter, 438 Hole Sizes_12 mm 5") and 51 mm (2")The 438 adapter plate is perfect for mounting on masts and booms, raising the cleat off the spar to improve the cleating angle and control.