The leveling feet package is inclusive of 16 set of leveling feet (thread bolts and T-nuts). The specification of the Threaded bolt is 1/4” diameter, the package is inclusive of 16 bolts and T-nuts in pairs, if you want to make any other matches, please check the specification first. The furniture leg levelers can be used on chairs, tables, cabinets, dressers, benches, sofas, beds or any patio furniture, outdoor furniture in the circumstance that the floor is not even or you want to raise the furniture a little bit higher. The leveling feet base is made of plastic with anti-slid design to keep the furniture steady on slippery floor. The leg levelers are easy to install, you need to have a drill and hammer to start your DIY projects. The adjustable furniture leveling feet kit is inclusive of 16 pieces 1/4” diameter thread bolt and 16 sets T-nut in pairs, they can be used on furniture in the circumstance that the floor is not even or you want to adjust your furniture’s height, they are easy to install, perfect for your DIY project.