1-25 Scale. Features over 280 parts, scaled from officail blueprints. lots of chrome parts, NHC-250 Six cylinder diesel engine, ten hollow truck tires, tilting 86" sleeper cab, plated disc wheels, tandem rear suspension. plated dual exhaust stacks, bumper and wheel options, color decals. Also comes with mini display box. Rubber tubing and metal axles. Skill level 3.