General Purpose Friction-Ring Stem Caster Swivel Caster 300 lb Load Rating 300 to 999 lb 4 in Wheel Dia 1 1/4 in Wheel Width Rubber Wheel/Tread Material 5 in Mounting Height Precision Ball 7/16 in x 1-7/16 in Caster Stem Size Friction Ring Steel Caster Frame Material Zinc Plated Frame Finish Yes Non-Marking 1 Number of Wheels