New Super Crystal colors to spice up your board. Ricta Wheels is proud to release the reinvented Super Crystal formula. Super Crystals are laboratory and pro-proven to be clearly the fastest skateboard urethane on the market. Set them up for the best performance in the skate park or out in the streets. Available in Red, Green, Blue, and now teal, purple, and fuschia 51mm-53mm. Ricta Wheels: Speed ReInvented.