EAG 11-14 GMC Sierra 2500HD/3500HD Bumper Billet Grille Aluminum 4mm Horizontal Bar Overlay Grille insert only as picture shows. Not complete grille, so shell is not included. 6061 Aircraft-grade Aluminum. 4mm bar width. Each grille guarantees a polished chrome color front surface.Multiple-step polishing process offers a mirror-like finish. It prevents the off-road elements like road debris such as papers, plastic, broken glasses, stones, etc. from getting into the engine compartment. All necessary hardware included.Provide installation instructions.Overlay Installation.