Constructed from pure 7071 series aluminum. Ace trucks offer high performance with some of the best turning and stability on the market. Spitfire Bighead wheels are made with Classic Spitfire 99A Urethane. Top quality USA made urethane to make for the best and smoothest skateboard wheels on the market. Amphetamine bearings are the epitome of durability and speed. These hybrid bearings feature 6 precision steel balls and 1 extra-hard ceramic ball - pulverizing dirt and thus cleaning your bearings as you ride! 1" Black Hardware made of high-grade steel with reduced, round heads and counter sunk for less board stress. Keep your board fresh and trucks locked on tight!