Spitfire 54mm 99DU Formula Four OG Classics Skateboard Wheels Natural • Spitfire Team skateboard wheels• 54mm• 99DU hard skateboard wheels• OG Classic shape• Natural urethane• Set of Four• Formulated for a harder-faster ride• Unmatched flatspot resistance• Smooth anti-stick slide• More speed and control• 100% True performance urethane More from Spitfire at Slam City Skates More Skateboard Wheels Spitfire 54mm 99DU Formula Four OG Classics Skateboard Wheels Natural