Quiet-Roll Friction-Ring Stem Caster Swivel Caster with Total Lock 220 lb Load Rating 0 to 299 lb 5 in Wheel Dia 1 1/4 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 6 7/16 in Mounting Height Precision Ball 27/32 in x 2-1/8 in Caster Stem Size Friction Ring Steel Caster Frame Material Zinc Plated Frame Finish Yes Non-Marking 1 Number of Wheels