NSF-Listed Sanitary Threaded Stem Caster Swivel Caster 350 lb Load Rating 300 to 999 lb 3 in Wheel Dia 1 3/4 in Wheel Width Polyolefin Wheel/Tread Material 3 7/8 in Mounting Height Precision Ball 1/2 In.-13 x 2-1/2 in Caster Stem Size Threaded Steel Caster Frame Material Zinc Plated Frame Finish Yes Non-Marking 1 Number of Wheels