Maintenance-Free High-Performance Expanding Stem Caster Swivel Caster 240 lb Load Rating 0 to 299 lb 4 15/16 in Wheel Dia 1 1/4 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 6 7/16 in Mounting Height Precision Ball 63/64 in x 2-35/64 in Caster Stem Size Expanding Adapter Glass Filled Nylon Caster Frame Material No Finish Frame Finish Yes Non-Marking 1 Number of Wheels