Single-Wheel Threaded Stem Caster Swivel Caster 220 lb Load Rating 0 to 299 lb 5 in Wheel Dia 1 1/4 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 6 7/8 in Mounting Height Precision Ball M12-20 x 25/32 in Caster Stem Size Threaded Glass Filled Nylon Caster Frame Material No Finish Frame Finish Yes Non-Marking 1 Number of Wheels