Tune up your board with this truck and wheel package. Inclues Thunder trucks, Spitfire wheels, hybrid ceramic bearings, and 1" hardware. Thunder Hollow Lights. Less weight – more strength, premium grade hollow kingpins, extra strong reinforced hollow axles, custom forged aluminum baseplates, lightning quick response & control. Hollow Kingpin. Hollow Axle. Blue Bushings. Thunder 147 = 8.0" Axle. Includes 2 Trucks.Spitfire is one of the largest companies in the skateboard wheel business. Spitfire uses top quality U.S. made urethane which in turn makes the best and smoothest skateboard wheel out. Many Pro skateboarders ride on Spitfire wheels. Not only are the wheels top quality but the graphics are awesome. Spitfire wheels are hard to get your hands on and always sell out quickly. Get yours today and notice the difference.. Also includes Amphetamine Hybrid Ceramic Bearings and 1" Mountin Hardware.