Product Dimensions: The threaded rod of the adjustable feet is 17mm long and the round base is 21mm in diameter. Please check the size before purchasing to avoid unnecessary trouble. Adjustable Height: Screw length: 1.7cm; Base height: 0.5cm. Adjustable height from 0.5cm to 2.2cm. 16 sets of furniture table leg levelers, can meet your needs. Wide Application: These adjustable leveling feet are applicable to all kinds of furniture, including tables, chairs, stools, cabinets, boxes, chests, desks, bookshelves, plant shelves, etc., and protect floors including wood, cement, tile, carpet, etc. High Quality Material: The screw leveling feet base is made of PP material, wear-resistant, non-slip, sturdy and durable, protect your table, sofa, cabinet from scratches, keep your furniture balanced and also provide good shock absorption. Easy to install: First mark the center of the adjustable furniture legs; drill a hole with a suitable depth; press the T-nut; screw the adjustable feet to adjust