General Purpose Threaded Stem Caster Swivel Caster 275 lb Load Rating 0 to 299 lb 4 in Wheel Dia 1 1/4 in Wheel Width Polyolefin Wheel/Tread Material 4 13/16 in Mounting Height Delrin 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