Stem is made from steel with a zinc plated finish. Foot is made from plastic and includes 1/16" black rubber anti-slip grip pad on underside. Wrench flats on the stem allow for easy height adjustment. Ball and socket articulation allows the stem to swivel 30 degrees to compensate for unlevel floors and mounting configurations. Plastic base is corrosion resistant. Drill hole locators for bolting down bases (on parts that have "W" dimension listed below in table). These leveling feet are ideal for industrial machines, electronics, conveyors, benches or office equipment in any industrial environment.