Exposed Racks Roof Top Tent (4-5 Person) 'Click-In' package contains four 51"  crossbars (with the Square holes). This package fits a variety of vehicles including Jeep Wrangler JL JLU (4 Door). This package is designed to hold (4-5 people plus tent equivalent) of Static Weight when properly distributed using the Weight Distribution Feet (18 included) and the required Hard Top Brackets (included). Weight limit is limited to vehicles capabilities, suspension, OEM maximum limits, and common sense. Crossbars allow user to load a variety of items on the Hard Top. Crossbars each contain 6 pre-drilled and threaded holes for the Weight Distribution Feet. This Package does not fit under the Jeep Factory Soft Top. Crossbars are made from heavy duty carbon steel, acid washed, electroplated and powder-coated for maximum durability. (option to buy Tent Brackets that bolt to tent and CLICK-IN to Crossbars - Sold Separately)