This is an aluminum pickup truck rack for ladder,lumber, kayak utilities carrying. <br>It also comes with four aluminum C-clamps for non-drilling installation, making it compatible with a variety different truck models. <br>It features the rust-free material of aluminum and powder-coated with weather resistant paint. Built to work & last. <br><br>The Extension Bar built on basic truck rack, which can be seen commonly in the truck rack e-commerce market. The Cantilever mounts to the crossbars and provides 38 inches of additional carrying capacity. The genius of this system is that it still allows for all of the flexibility of the Sliding Cantilever System while protecting your cab from potentially unstable loads. <br><br>All necessary installation hardware included.