Material: Nylon and Metal. Set of 6 swivel and adjustable furniture leveling feet, features a wide heavy base and has a load capacity of 800lbs Swivel and adjustable - The height and the angle are adjustable as your require. The swivel feet forgive minor bumps and compensates for uneven floors. These adjustable leg levelers can be placed on tables, chairs, shelving units, kitchen cabinets, plant stands, and so much more Easily level the furniture feet or fit the uneven floor surface. Reduces friction & noise while moving furniture, perfect for protect your floor and get rid of the shaking furniture Easy to install: Drill a 5/16" hole , 1.96" deep hole using 5/16" drill bit. Screw in leveler to the desired height. Thread Rod Size: M8 x 50mm, base diameter: 1.57" (40 mm)