Polyurethane Tread on Steel Core Wheel for Pallet Jacks, 1,870 lb Load Rating, 1,000 to 2,999 lb Load Rating Range, 3 17/64 in Wheel Dia., 4 1/2 in Wheel Width, Polyurethane Wheel/Tread Material, Firm, 92 Shore A, Precision Ball, Standard Tread Shape, 1 3/16 in For Axle Size, Not Included Includes Spanner Bushing, Steel Wheel Core Material, Yes Non-Marking, 1 5/8 in Hub Length