These brand new Spitfire Wheels wheels are built to last! Coming in at 63mm in diameter and 99a in hardness, these bad boys are ready for action and packed with steez. Spitfire Wheels Bighead Red / Black Skateboard Wheels - 99a 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 63mm Spitfire Wheels Bighead Red / Black Skateboard Wheels - 99a; includes four (4) wheels.