706-44 "Clear Step" Outside lead furling block. Unique design leads your furling control line outside of your stanchions for a clean lead aft to the cockpit. Stainless cheeks with Aluminum ball bearing sheave ensure low-friction and high strength. Locks in place with a small set screw accessed through a small hole in the sheave. Fits 1-1/4" (32mm) stanchions, Length 3-5/8" (92mm), Thickness 1-1/8" (29mm), Safe Working load 850 lbs (390kg), Weight 7oz (198 g), Maximum line size 5/8" (16mm)