Rubber Tread on Iron Core Wheel, 600 lb Load Rating, 300 to 999 lb Load Rating Range, 8 in Wheel Dia., 2 in Wheel Width, Rubber Wheel/Tread Material, Soft, 75 Shore A, Roller, Standard Tread Shape, 1/2 in For Axle Size, Not Included Includes Spanner Bushing, Iron Wheel Core Material, No Non-Marking, 2 15/32 in Hub Length