Independent Forged Hollows trucks have the same great features of the Standard Stage 11 trucks, but feature forged aluminum baseplates, hollow kingpins, and hollow axles making for a 10% lighter truck.Spitfire is one of the largest companies in the skateboard wheel business. Spitfire uses top quality USA made urethane which in turn makes the best and smoothest skateboard wheel on the market!Amphetamine Bearings are the epitome of speed and durability. Hybrids feature the durability of steel bearings with the speed of ceramics. Containing 6 steel ball bearings and 1 ceramic ball. These bearings pulverize dirt to clean your bearings as you ride, ensuring a long lasting bearing to keep you rolling!