NSF-Listed Sanitary Friction-Ring Stem Caster Swivel Caster 100 lb Load Rating 0 to 299 lb 3 in Wheel Dia 1 in Wheel Width Rubber Wheel/Tread Material 3 9/16 in Mounting Height Plain 7/16 in x 1-3/8 in Caster Stem Size Friction Ring Steel Caster Frame Material Zinc Plated Frame Finish No Non-Marking 1 Number of Wheels