Set of 4 Adjustable leg levelers feature a 3/4" diameter non-mar nylon base with a 1" high threaded stem. Supplied with fastening nut. Use in the base of furniture and clocks to level and elevate. Sold in sets of four pieces. Leg levelers are used on clock cases and furniture to level the piece. A 5/16" dia x 1" long hole is made in the base of project to attach the fastening nut.The nut is hammered into the hole, The leveler can now be screwed into the nut to level the cabinet or clock. Non mar strong white nylon with zinc steel nut and thread. Size 3/4" diameter x 1" long thread.