Hook-In Block, Harken/Optiparts

HARKENS NEW BALL BEARING HOOK IN BLOCK Harken has developed a new hook in sprit block. This block actually conforms to the mast so there is less wear. It also prevents twisting of the hook-in block. Harken suggests that the block use high strength line rather then stainless wire. In addition they recommend the Harken 29mm Ti-lite block or the 29 mm Carbo Single/fixed block for turning the block into the 2 to 1 power system. The slightly bigger blocks provide very smooth adjustment of the sprit tension. Black.