All-Weather Durability: Made of high-strength aluminum alloy, this VEVOR semi-truck step tool box offers excellent corrosion, deformation, rust and weather resistance. Heavy-duty, waterproof and durable for long-term outdoor use

Stable Steps, No Wobbling: Built with 2 mm thickened step plates and a 3 mm thickened toolbox body, this heavy duty aluminum step toolbox offers a sturdy structure and supports up to 441 lbs, ensuring safe and stable entry and exit for drivers

Safe & Efficient Storage: Featuring a spacious 18.9" x 20.28" x 22.83" storage interior, a T-handle lock and 2 keys, this semi-truck saddle step box securely holds wrenches, screwdrivers, gloves, and other essentials, keeping them neatly organized and easily accessible

Strong Anti-Slip: The thickened step plates with ant-slip patterns greatly increase traction and reduce the risk of slipping. In rain or snow, our side mount truck tool box provides a stable platform for safer and easier entry and exit