I used this to add a 120 volt outlet to my new all aluminum enclosed cargo trailer. Since my pendant has a beautiful silver finish, I was very nervous about drilling a two inch hole and had to use excessive force to drill the hole, resulting in a dent in the leather. But this saw's razor-sharp teeth (and gentle pressure on the drill bit) went through the aluminum paneling and the wood behind it like butter. He made a perfect cut with no burrs or raised metal. Great tool!