Toolboxes are constucted of powder coated aluminum in a Diamond Plate tread pattern. Toolboxes can hold up to 300 pounds of cargo depending on vehicle application. Features include key-locking single lid design- gas cylinders for easy lift and full weather stripping to help seal out moisture and dust. 6.4 and 8.0 Permanent-Mount Black Diamond Plate Commercial Grade Toolbox. Single Lid Opening. Measures 70L x 20W x 17D. Maximum capacity -- 250 Lbs.