Friction-Ring Stem Caster Swivel Caster 165 lb Load Rating 0 to 299 lb 3 in Wheel Dia Thermoplastic Elastomer Wheel/Tread Material 3 3/16 in Mounting Height Plain 7/16 in x 7/8 in Caster Stem Size Friction Ring Nylon Caster Frame Material No Finish Frame Finish Yes Non-Marking 2 Number of Wheels