NSF-Listed Sanitary Threaded Stem Caster Swivel Caster 350 lb Load Rating 300 to 999 lb 3 1/2 in Wheel Dia 1 1/4 in Wheel Width Polyurethane Wheel/Tread Material 4 35/64 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