These number plates attach to the fender struts of a Harley Sportster (drilling number plate is required). The 18 gauge stainless steel plates can be shaped by hand to match the contours of your seat (they are shipped flat). You can download a template of the number plates if you would like to have custom vinyl decals made. The surface can be wet sanded and polished to a shine, or left dull depending on preference. Sold as a pair. Mounting hardware included. These plates work with our Sportster Cafe Racer seat.