This may sound silly, but I was surprised by the carbide teeth on this hole saw. I know, I know, the description says it has carbide teeth, but "carbide teeth" often turn out to be carbide molecules, and I'm not expecting much. These teeth are similar to the teeth on a 10-inch saw: bits of carbide are welded to the blade and then sharpened. I haven't used a hole saw in anything denser than drywall so the carbide may turn out buttery smooth but looks impressive. Be careful when using them asβ¦