Package contains 12 furniture leveling feet and comes with 12 T-nuts. Inch coarse thread, 1/4inch-20 UNC. Product height is 1inch(25mm), screw length is 0.7inch(18mm), base diameter is 1inch(25mm), and base thickness is 0.29inch(7mm).The furniture leveling feet are made of galvanized steel and black PP non- base, the leveling rails are strong enough and rust-proof. The height of the furniture leveler can be adjusted via threads (1/3inch - 3/4inch) according to your needs. Can support over 200 lbs.Furniture leveling feet are adjustable devices that attach to the bottom of furniture legs to provide stability on uneven surfaces. Preventing furniture from shaking also allows furniture to be moved easily, protects floors from scratches, and reduces noise when moving furniture.Adjustable table legs are compatible with flooring types-wood, laminate, hardwood, tile, and carpet. They suit a wide range of furniture pieces like tables, cabinets, chairs, desks, TV stands, shoe racks, and more. Whether indoors or outdoors, these legs offer versatile height adjustment for tables, chairs, kitchen cabinets, stools, dressing tables, patio furniture, and even restaurant setups.adjustable feet fit most American-made furniture feet and level with ease to update your furniture feet with ease. Please check the size before purchasing to make sure it will fit your replacement. Adjustable furniture legs are recommended for wood furniture with legs 1 inch in diameter. If it is smaller than this size, there is a risk of cracking during installation.Colour:BlackMaterial:MetalPackage Contents:1set * Furniture Leveling FeetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.