Bolt-In Stem Caster with Square Stem, Swivel Caster, 300 lb Load Rating, 300 to 999 lb, 5 in Wheel Dia., 1 1/4 in Wheel Width, Polyurethane Wheel/Tread Material, 6 1/64 in Mounting Height, Delrin, 3/4 in x 2-1/16 in Caster Stem Size, Square, Steel...