General Purpose Threaded Stem Caster Swivel Caster with Brake 250 lb Load Rating 0 to 299 lb 3 in Wheel Dia 1 1/4 in Wheel Width Polyurethane Wheel/Tread Material 5 1/2 in Mounting Height Precision Ball 1 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