The Optimist Halyard line with Optipart hook-in plain bearing Optimist halyard as used on the Silver spars from Optiparts. The hook-in block has a round fiberglass filled nylon case designed to fit...
Plain bearing halyard block as used on Optimist School mast. Specifications Cheek material: Stainless steel Sheave material: Nylon Sheave diameter: 22 mm