This Chrome In-Groove Molding Trim Kit is made of the Highest Grade 304 Stainless Steel (Matches the Factory Chrome PERFECTLY!!!). Every Chrome Door Molding Trim Piece perfectly aligns and adheres to the surface of the lift gate with 3M double-sided adhesive (already attached to the inside of the parts ready for installation). Just clean the lift gate surface with an alcohol based cleaner, then peel and stick. A very fast and easy install. The 3M adhesive is an automotive grade adhesive and is very strong.