Polyurethane Tread on Plastic Core Wheel, 250 lb Load Rating, 0 to 299 lb Load Rating Range, 3 1/2 in Wheel Dia., 1 1/4 in Wheel Width, Polyurethane Wheel/Tread Material, Firm, 98 Shore A, Precision Ball, Standard Tread Shape, 3/8 in For Axle Size, Not Included Includes Spanner Bushing, Plastic Wheel Core Material, Yes Non-Marking, 1 5/8 in Hub Length