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 99d Classic Mint Skateboard Wheels are your perfect match. They offer speed and control on all surfaces, have unmatched flatspot resistance and won't trip you up mid-slide. Constructed from 100% true performance urethane, the Formula Four 99d Classic Mint Skateboard Wheels from Spitfire will last you for many skate seshes to come.