Conductive Rubber Tread on Plastic Core Wheel, 250 lb Load Rating, 0 to 299 lb Load Rating Range, 4 in Wheel Dia., 1 1/4 in Wheel Width, Thermoplastic Rubber Wheel/Tread Material, Soft, 70 Shore A, Precision Ball, Standard Tread Shape, 3/8 in For Axle Size, No Includes Spanner Bushing, Plastic Wheel Core Material, Yes Non-Marking, 1 1/2 in Hub Length. This item has been restricted from sale in the following state (s): []