Ace - AF1 Inverted Hollow Polished Trucks (Multiple Sizes)Engineered for maximum durability, unrivaled performance, precision tuning and guaranteed lowest grind clearance of any kingpin on the market. At the heart of our design is a patent pending technology providing a more stable anchor point for the kingpin. Our innovative hollowed axle system and domed out baseplate make it the strongest and lightest truck we've ever created. This cutting edge design sets a new standard for the future of skateboard