Stem Caster Swivel Caster with Brake 225 lb Load Rating 0 to 299 lb 3 7/8 in Wheel Dia Thermoplastic Elastomer Wheel/Tread Material 4 3/8 in Mounting Height Plain 1/2 In.-13 x 1 in Caster Stem Size Threaded Nylon Caster Frame Material No Finish Frame Finish Yes Non-Marking 2 Number of Wheels