Get the best of both worlds with Spitfire wheels and Amphetamine Speed Bearings. The best selling 99A durometer wheel in the business coupled with the most cost effective hybrid ceramic bearing on the market Spitfire Bighead 53mm White 99A Amphetamine bearings are the epitome of durability and speed, and this set features the durability of a steel bearing with the speed of a ceramic. These high-quality hybrid bearings are strong enough, fast enough, and more than resilient enough to help you carve or cruise your own path. This singular extra-hard ceramic ball pulverizes dirt and thus cleans the bearing as you ride, ensuring a long-lasting lifespan to keep you rolling Spitfire is one of the largest companies in the skateboard wheel business. Spitfire uses top quality U.S. made urethane which in turn makes the best and smoothest skateboard wheel out. All of the Pro skateboarders ride on Spitfire wheels. Not only are the wheels top quality but the graphics are awesome. Spitfire wheels are hard to get your hands on and always sell out quickly. Get yours today and notice the difference.