Stem Caster, Swivel Caster, 170 lb Load Rating, 0 to 299 lb, 4 in Wheel Dia., 1 1/4 in Wheel Width, Rubber Wheel/Tread Material, 4 13/16 in Mounting Height, Plain, 1/2 In.-13 x 1 in Caster Stem Size, Threaded, Steel Caster Frame Material, Zinc Plated Frame Finish, No Non-Marking, 1 Number of Wheels