Quiet-Roll Friction-Ring Stem Caster Swivel Caster with Total Lock 175 lb Load Rating 0 to 299 lb 3 in Wheel Dia 1 in Wheel Width Neoprene Wheel/Tread Material 4 1/8 in Mounting Height Precision Ball 7/16 in x 7/8 in Caster Stem Size Friction Ring Steel Caster Frame Material Chrome Plated Frame Finish Yes Non-Marking 1 Number of Wheels