L-Shaped heavy duty structural steel Underbody mounting brackets are used for mounting Underbody Toolboxes. Black powder-coated finish for corrosion resistance and universal hole pattern for quick and easy mounting to the vehicle. Reversible retaining bars allow for multiple position mounting of each bracket. Accommodates any 18″ Underbody toolbox. Constructed of heavy duty structural steel. Brackets have Welded Braces.