Package: Pack of 1 piece Pulley and 2pcs M6 x 50 Expansion Screws
Silent double bearings are suitable for ground, wall, beam, and must be installed on a solid concrete surface or a solid metal. (Aluminum alloy, wooden surface cannot be installed. Vertical force is not recommended)
Made of 304 stainless steel, it is sturdy and durable, and has strong rust resistance.
Using gravity and skating for lifting work, designed for use with rope or cord in indoor and outdoor applications to hang weight things or lighten load.