Stem Caster, Swivel Caster with Brake, 150 lb Load Rating, 0 to 299 lb, 5 in Wheel Dia., 15/16 in Wheel Width, Polyurethane Wheel/Tread Material, 5 3/4 in Mounting Height, Plain, 1/2 In. -13 x 1 1/2 in Caster Stem Size, Threaded, Steel Caster Frame Material, Zinc Plated Frame Finish, Yes Non-Marking, 1 Number of Wheels