Run multiple halyards and control lines aft from the mast to stoppers or winches for quick easy adjustment. Low-profile, high-strength organizers maximize deck space and let you operate control lines from the safety of the cockpit. Stainless steel top plate Delrin sheaves: 51mm (2") diameter SWL: 1950lbs Max line diameter: 1/2" Use 1/4"-20 fasteners