3" X 1-1/4" Non-Marking Rubber Thermoplastic Swivel Caster, Total Lock Brake, Loads Up To 200 lb 3 in, Wheel Width 1 1/4 in, Wheel/Tread Material Thermoplastic Rubber, Wheel Core Material Plastic, Non-Marking Yes, Number of Wheels 1, Caster Brake Type Total Lock Brake, Tread Shape Standard.