* Axle width: 8.8\" * Hanger width: 5.37\" * Truck height: 2.1\" * Top Bushing: 12mm (height), 91a hardness * Bottom Bushing: 14mm (height), 86a hardness * Suitable for boards: 7.75\" - 8.12\" * Assembled from pure 7071 series aluminum * Axles made of heat-treated 3056 series steel * Colour: Sapphire The Ace Trucks Classic 33 Skateboard Trucks (Pair) in Sapphire are reliable and have a proven track record. They feature Ace's original geometry and industry-first features such as beveled hanger ends and oversized axles, which improve bearing performance. The Ace Classics are made using the industry standard 7071 alloy and 3056 steel axles, so you can expect them to perform at the highest level.