The Spitfire Formula Four Classic Wheel is a 53.5mm skate wheel from pro skater Diego Todd's signature size, built in Spitfire's classic shape and finished at a 99D durometer for a firm, fast-rolling ride. It carries Spitfire's signature Formula Four urethane formula, trusted by skaters for consistent performance across terrains. The 53.5mm size sits between Spitfire's standard offerings, giving riders after a specific setup a dialed-in option. Part of Spitfire's Classic lineup, it's a dependable pickup for anyone after this specific Diego Todd size.