UWS TBTS-60-BLK Topsider Black Aluminum One Door Toolbox One-Piece heavy duty 0080 inch and 0.063 inch aluminum design helps prevent sagging, leakage and minimizes denting Stainless steel T-lock brass lock system provides rust-free product life, One-hand access and 3 latch points for strength and security Stainless Steel Aircraft Cable Supports allow lid to open 90 degree and withstand up to 1,000 pound load when in the open position Heavy-Duty MicroSeal Stripping helps seal out moisture, dust and dirt Mounts perfectly on top of truck bed side rails