It is often necessary to remove door glasses without breaking them. Drilling out the rivet so you can remove the door glass is easy if you can remove the rivet stem. Rivet stems are made of steel and are impossible to drill out. Our rivet stem remover has a contoured end so it will sit over the rivet and align perfectly with the rivet stem. You then hit the end of the rivet stem remover with several light taps and the rivet stem is driven out. The unique design allows a metal-to-metal-to-metal contact (hammer to stem remover to stem).