The Lehigh 30 lb. Zinc-Coated Fast-Eye Single Pulley measures 1.7-inches by 0.75-inches by 0.6-inches. This product is rated for 30 lbs. and controls tension and slack in a belt drive. With its zinc finish and movable wheel, this pulley is made for use with 1/8-inch and 3/16-inch rope. Attach rope or cable to the quick eye and lift up to 30-pounds. Use this pulley to lift heavy objects with minimal exertion, including boxes, crates and lumber. Knowing your items are secure and safe is the seal of quality that comes with all Lehigh products. This pulley is finished in zinc to protect against oxidization and rust. Only use this pulley with rope equal or above its safe load limit. Committed to innovation, quality and ease of use, Lehigh improves safety and quality in and around the house, manufacturing trustworthy cords and hooks.