SizeInch coarse thread,size 3/8-16,1.4"(L)*1.4"(W)*2.38"(H)-look at the second picture in the main image. Please do not purchase without determining the thread specification. NoteThe maximum load of this product is 1320lb,recommended for large or heavy furniture with leg diameter greater than 1-1/2", such as bar table,side table,storage cabinet,chest of drawers and so on. If less than this size, there is a risk of cracking during installation. FunctionAvoid direct contact between the furniture legs and the ground, protect the floor, tile or carpet from damage. The height of the four furniture legs can also be adjusted according to needs, the adjustment range is between 1"to 2".Contains 8 pcs furniture pads,4 pcs for use,4 pcs for replacement after dirty. Install You need to drill a hole with a diameter of 1/2" and a depth greater than 1-1/2" on the furniture leg with an electric drill, then insert the T- nut ( tightened with a hammer ) and screw in the leg levelers. If it is a metal leg, you need to weld a 3/8" threaded insert first, and then install the leveling feet.