This 29-in. aluminum tool box is a durable, versatile storage solution for heavy-duty truck beds, outdoor trailers, pickups and RVs, also working as a lockable underbody box. Made of premium aluminum, it has high intensity and corrosion resistance, shielding tools/equipment from moisture, dust and minor impacts-ideal for long-term outdoor or heavy-duty use. Despite being robust, it's lightweight, avoiding extra weight on tractors, trailers, trucks or RVs to prevent vehicle strain. The 5-bar tread pattern reinforces the aluminum, boosting sturdiness to handle daily wear, rough roads and frequent use. Measuring 29 in. (L) x 16.5 in. (W) x 18.5 in. (H), it offers ample space for wrenches, screwdrivers, small parts or outdoor gear, suiting home, garage, DIY, construction or roadside needs. It supports versatile mounting: install on hitch racks, camper cargo racks, enclosed trailer tongues or RV rears to maximize unused space. For security, it comes with a lock and 2 keys to prevent tool theft/loss. The seal ring design creates a tight seal, blocking water/dust to keep interiors clean and dry, avoiding tool rust or damage. Easy to install without complex tools, it balances storage and space efficiency-perfect for truck drivers, campers or DIY enthusiasts needing reliable storage. Color: Black.