Specification: Aluminum Tool Box is high-intensive corrosion-resistant weather-resistant over-lapping lid design. Powdercoated Black Aluminum Surface Finish, Bar Tread Pattern Strengthens the Aluminum for Durability. Lightweight design of the Truck Toolbox reduces weight gain of a tractor trailer or truck. Sealing ring design protects the interior cleanliness and prevents the entry of rainwater and other external. Tool Box for trailer provides Perfect storage space for your truck/trailer/garage/domestic use. Heavy Duty Construction Stainless Steel Security Lock High-Intensity & Corrosion-Resistant Seal Ring Design Protect Interior Lightweight Box Safety Reduce Weight .