The hardware kit makes installation of the TonneauMate Toolbox really easy. The toolbox fits most full-size trucks with or without a Truck Bed Cover. The design allows for front, middle or rear placement in the truck bed.\nTonneauMate Hardware Kit - 2007-2013 Chevy Silverado/GMC Sierra without Cargo Management System\n2007-2013 Chevrolet Silverado 1500 Without Cargo Management System; 2007-2014 Chevrolet Silverado 2500 HD Without Cargo Management System; 2007-2014 Chevrolet Silverado 3500 HD Without Cargo Management System; 2007-2013 GMC Sierra 1500 Without Cargo Management System; 2007-2014 GMC Sierra 2500 HD Without Cargo Management System; 2007-2014 GMC Sierra 3500 HD Without Cargo Management System