Offset Hinge designed to fit tight against the front of the bed and still allow the lid to open without rubbing Patented fully foamed lid creates a rigid wall between outer aluminum layers to help prevent bending or warping Stainless steel paddle handle lock provides strength,security and rust-free product life 0.063 inch aluminum One-Piece Tub and Lid is designed to support heavy loads, absorb tool drops and prevent leakage and is available in two finishes: Bright aluminum Diamond Tread and Black Powder Coated aluminum Diamond Tread Lid Opens 90 degree for easy loading and unloading of tools and equipment