Rubber Tread on Aluminum Core Wheel, 500 lb Load Rating, 300 to 999 lb Load Rating Range, 5 in Wheel Dia., 2 in Wheel Width, Rubber Wheel/Tread Material, Soft, 80-83 Shore A, Roller, Standard Tread Shape, 3/4 in For Axle Size, Not Included Includes Spanner Bushing, Aluminum Wheel Core Material, No Non-Marking, 2 3/16 in Hub Length