Stem Caster, Swivel Caster with Total Lock, 220 lb Load Rating, 0 to 299 lb, 5 in Wheel Dia., 1 1/4 in Wheel Width, Polyolefin Wheel/Tread Material, 6 25/32 in Mounting Height, Ball, 1/2 In.-13 x 1-1/2 in Caster Stem Size, Threaded, Nylon Caster Frame Material, Unfinished Frame Finish, Yes Non-Marking, 1 Number of Wheels