If staying in one place isn't your style, and you're more than down to skate on whatever surface is put in front of you, the Spitfire Formula Four Classic Shape 99a Skateboard Wheels are your perfect match. They present speed and control on all surfaces, have an unmatched flatspot resistance and won't trip you up mid-slide. Constructed from 100% true performance urethane, the Formula Four Classic Shape 99a Skateboard Wheels from Spitfire will last you for many skate seshes to come.