High-quality material: The leveling feet are made of high-quality iron, with strong bearing capacity, and the surface is sprayed with shielded matte tension. It is wear-resistant, durable and strong. Note The maximum load capacity of this product is 1300 lbs, it is recommended to be used on high or heavy furniture with legs over 1.5 inches in diameter, such as high tables, side tables, storage cabinets, dressers, etc. . If it is smaller than this size, there is a risk of cracks during installation. FunctionAvoid direct contact between furniture legs and the ground, protect floors, tiles or carpets from damage. The height of the four legs of the cabinet can also be adjusted according to your needs, and the adjustment range is between 2.5 cm and 5.1 cm. Contains 8 pieces of furniture gliders, 4 to use and 4 to replace when dirty. [Installation] You need to use an electric drill to drill a hole with a diameter of 1.27 cm and a diameter of 1.27 cm. more than 1.5" deep on the furniture leg, then insert it into the T-slot (tighten with a hammer) and tighten the leg adjuster. In the case of metal legs, a 3/8" threaded insert must be welded in first, then the leveling legs installed.