[Plastic and Metal Materials] - These adjustable furniture legs are made of high quality metal and plastic, finely machined, durable and easy to assemble. Wear-resistant, corrosion-resistant and rust-proof. [Adjustable Design] - Furniture jack feet have thick plastic base and height adjustable screws. The adjustable table legs can adjust the height as you need. The height of each leg can be adjusted by 0.79 inches so that the furniture can be placed stably on the uneven floor. [Easy to Install] - Installing this adjustable jack foot will be very quick and simple . It has an M6 screw and a round white plastic base. You can combine it with furniture with threaded sockets. You just need to screw them on the 4 furniture feet. [Widely used] - The leveling feet suitable for office or home, for light furniture with threaded rings, for tables, cabinets, chairs , desks and other furniture. It also keeps your furniture off the damp floor and keeps the furniture clean and beautiful. [30 pcs adjustable feet] - The set contains 30 pcs adjustable furniture feet, the size of the threaded rod is M6 x 15 mm , plastic base diameter is 30mm, total height is 25mm. A total of 30 furniture legs enough for daily needs.