Pack of 453mm diameter99a durometerspitfire is the world39s 1 urethanehand poured shaped and specifically engineered in san francisco ca usaonly the most advanced formulas and compounds are used for all wheelsspitfire have achieved the highest levels in tolerance and true speed39vatos locos por vida39 skating isn39t a fad it39s a journey a mission a lifelong passion spread that passion with the world with the new spitfire por vida wheels