RC Industries' Diamond Bright chest-style aluminum toolboxes are perfect for the back of any semi, pick-up or travel trailer. They are lightweight, corrosion-resistant and extremely durable. Constructed of .100 mil Diamond Bright aluminum which is lighter than steel, shines up easily and provides a treaded surface for a firm foothold. These boxes include stainless steel T-handles with lock and key, plus full stainless steel hinges and fasteners. The hinges are offset, giving the door a full 180-degree range of movement. A neoprene weather seal and shielded door frame keep the elements out and your tools safe inside. Available in three popular sizes to fit almost any application.