E-Autogrilles Aluminum Polished 4mm Horizontal Overlay Billet Grille for 07-12 GMC Acadia (1PC)(33-0170) High Quality Customer Designed and Produced Using CAD Designed and CNC Machined Mold Made of 6062 Aircraft-Grade Aluminum Alloy 4mm Bar. Mirror Finish Polish. Perfect Fit. Each Billet Grille is Tested on OE Grille Shell. Easy and Quick Installation. All Necessary Hardware and Instruction are included. overlay