Nonmarking Rubber Tread on Aluminum Core Wheel, 440 lb Load Rating, 300 to 999 lb Load Rating Range, 5 in Wheel Dia., 2 in Wheel Width, Rubber Wheel/Tread Material, Soft, 70 Shore A, Precision Ball, Standard Tread Shape, 1/2 in For Axle Size, Not Included Includes Spanner Bushing, Aluminum Wheel Core Material, Yes Non-Marking, 2 7/16 in Hub Length