Stem Caster Swivel Caster 315 lb Load Rating 300 to 999 lb 5 in Wheel Dia 1 1/4 in Wheel Width Polyurethane Wheel/Tread Material 6 1/8 in Mounting Height Precision Ball 7/16 in x 1-3/8 in Caster Stem Size Friction Ring Steel Caster Frame Material Zinc Plated Frame Finish Yes Non-Marking 1 Number of Wheels