Leveling Threaded Stem Caster Swivel Caster with Leveling Pad 550 lb Load Rating 300 to 999 lb 2 in Wheel Dia 13/16 in Wheel Width Nylon Wheel/Tread Material 3 5/16 in Mounting Height Plain Wheel Bearing Type Caster Stem Size M12 x 15 Threaded Bolt Hole Caster Stem Type Aluminum Caster Frame Material Powder Coated Frame Finish Yes Non-Marking 1 Number of Wheels