HEAVY-DUTY BRACKETS FOR UNDERBODY TOOLBOXES: These mounting brackets are specifically designed for attaching underbody boxes to trucks. They ensure a solid and secure attachment of the boxes under the truck, saving valuable space in the cargo area. DURABLE CONSTRUCTION: The brackets are made of high-quality steel material and are resistant to heavy loads and vibrations during transportation. They provide a stable attachment of the underbody boxes, ensuring they remain firmly in place even under rough conditions. PRODUCT DIMENSIONS: Optimized sizing at 17.7"L 3.15"W 18.5"H (0.13" thickness) with 10MM pre-drilled screw holes ensures perfect compatibility with standard underbody toolboxes. WELDED STRUCTURAL: The welded cross strap enhances strength without requiring screws, offering a more robust structure than bolt-fastened designs and easier installation.