The Gullwing crossover truck tool box is a double lid box that rests on the side rails of your truck. With its raised center and lowered lid entry, you can easily place long items into this truck box and easily reach the bottom of the truck tool box. The tapered lid design matches the contour of your cab, giving it that custom look. There are two Lockable T-Handles on both lids for easy entry. Every Gullwing saddle truck tool box is constructed from marine grade aluminum so it will never rust. Gullwing saddle tool boxes are available in sizes to fit all pickup trucks and they come with a Lifetime Warranty.