A simple way to level furniture, particularly on uneven floors! Heavy-duty levelers feature feet made of specially engineered plastic to provide a smooth gliding surface.Technical Details Base is 1-1/8" in diameter x 3/8" high Bolt Length: 1-1/2" Stem is made of zinc plated steel   Best Used With: Steel 5/16"-18 Threaded Inserts, Brass 5/16"-18 Threaded Inserts, Hex Drive 5/16"-18 Threaded Inserts or T-Nuts