Clear Step Lead Block for 1" StanchionsUnique design leads your furling control line outside of your stanchions for a clean lead aft to the cockpit. Stainless cheeks with Delrin(tm) 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. Specifications: Maximum line diameter 1/2"; For 1" Stanchions; Overall Width 3-1/8" (79mm); Thickness 1-1/8" (29mm); Safe Working load 750 lbs (350kg); Weight 5oz (142g) ; - cis2:mm5mnJlm -