Spitfire Soft Skateboard Wheels Sapphire Radial 90D Pink/Green 54mm Features: Set of four wheels enough for one skateboard A newly developed 90DU clear riding surface, bonded to a 101DU Formula Four inner core allows for a fast, smooth, long-lasting speed Renound Spitfire high quality poured 100% urethane. All Spitfire wheels are hand poured, shaped and specifically engineered in San Francisco CA. USA. Spitfire Sapphire Radials 90DU Skateboard Wheels Pink/Green/Clear 54mm