Note: Sold in sets of 2 trucks.Durable all purpose truck for any type of skateboarding. 55mm tall for optimal performance and wheel clearance with wheels 56mm and under.A356 T6 Aluminum Hanger & Baseplate; The best lightweight aluminum alloy heat treated to T6 condition for strength, durability, and grind feel.SCM435 Chromoly Steel Axle; Highest quality and durability available. Independent Trucks Indy Stage 11 Truck Standard Polished 149 MM