Ideal for use as Carriage Pulley. Heavy Duty knot passing pulleys. Rotating side plates and a rigging point that will accommodate three 13mm carabineers. Aluminum pulley sheave for durability. Extra-Wide Pulley for ropes up to 5/8" diameter The Extra-Wide Pulley is the only pulley that will pass knots in 5/8" ropes. 3" wide sheave with Oilite bushing.