General Purpose Threaded Stem Caster Swivel Caster 220 lb Load Rating 0 to 299 lb 4 in Wheel Dia 2 5/16 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 5 in Mounting Height Precision Ball M12 x 1 in Caster Stem Size Threaded Nylon Caster Frame Material No Finish Frame Finish Yes Non-Marking 2 Number of Wheels