Wheel Well Fender Accessory Trim is cut from sheets of 26-gauge stainless steel, with a 3M adhesive backing pre-applied. The 3M backing makes an easy to apply, peel and stick application process. The toughest part is aligning it correctly. All of our stainless steel products are created from inception to packaging by our team of professionals, on location in Westford, Mass. Wheel Well Fender Accessory Trim is cut on the industrial CO2 Laser that creates the typical 90 degree cut-edge.