The primary difference between TMAX steel and aluminum mechanic trucks is weight. Aluminum mechanic trucks are lighter, offering a higher payload, and aluminum also provides added corrosion protection. For designs that require added strength, such as including a large crane, steel may be required. Aluminum TMAX models include two drill-free mounting rails for quick accessory installation. High-strength, high-durability models are available in both steel and aluminum, and the Stellar team or your distributor can help you select and design the best model for your needs.