The Tamiya Grand Hauler King step box with air tank is a high-quality aftermarket accessory designed specifically for Tamiya semi-trucks in 1:14 scale. This product, made by Tamiya, is a perfect addition for hobbyists looking to enhance the interior of their RC model vehicle with a detailed and functional step box and air tank. The Tamiya Grand Hauler King step box offers a realistic and stylish touch to the overall look of the vehicle, making it a must-have accessory for enthusiasts of radio control vehicles.