Once again, ACE is proud to introduce the most technical and performance driven truck to date with a revolutionary inverted kingpin system. Engineered for maximum durability, unrivaled performance, precision tuning and guaranteed lowest grind clearance of any kingpin on the market. • Each truck includes bonus adaptor tool, 2 per set!. Place this magnetic adaptor in ANY skate tool, and you have an Inverted tool. The magnetic adaptor won’t fall out minimzing risk of loss. • Durable Hand-poured 96a urethane pivot bushings for better response. • Top Bushing: 12mm tall | 94a hardness • Bottom Bushing: Bottom 14mm tall | 86a hardness • Each truck includes bonus black Axle Re-Theader Die