Durable, high performance truck for all types of skateboarding. 356 T6 Aluminum hanger and baseplate, solid Chromoly steel axle, grade 8 kingpin, Supercush cushions with cylinder bottom. Featuring superior turn and stability, better grind clearance, improved no hang-up yoke for grind tricks, and less wheel bite. They last longer and are stronger on impact than any other truck on the market. Independent trucks are Made In The USA � Accept No Substitutes. 55mm height, recommended wheel size without riser�56mm and under. Recommended deck size 7.4" - 8".