Lund 6134T 21-Inch Aluminum Trailer Tongue Truck Box, Diamond Plated, Silver 60-inch low profile cross bed truck tool box made of 0.06-inch aluminum with a diamond plated black finish^Rust-resistant, electrostatically applied finish can withstand unimaginable beatings and protects against water and rust^Ideal for adding extra secure storage while not compromising your view of the road or the clean look of your vehicle^Measures 60-inches (L) inside flatbed by 20.5-inches (H) by 11-inches (W)^Comes with a limited lifetime warranty that protects against defects in materials and workmanship