These brand new Spitfire Wheels wheels are built to last! Coming in at 54mm in diameter and 97a in hardness, these bad boys are ready for action and packed with steez. Spitfire Wheels Formula Four Radial Full Natural Skateboard Wheels - 97a are sold in (1) set of four (4) wheels. You know, because that's how many wheels you need on a skateboard. Note: Bearings not included. Includes: One (1) set of 54mm Spitfire Wheels Formula Four Radial Full Natural Skateboard Wheels - 97a; includes four (4) wheels.