Review on Bi Metal Diameter Perfect Recessed Cutting by Arnold Carrigan

So here's the thing, for my money it was excellent and cut a 6 inch hole. But I started out with a smaller Dewalt hand drill without a hammer drill, and that killed this drill. Talking smoking engine and drill in the garbage. A larger impact drill worked well with the tool, but it took some effort to hold. Eventually he only reached the aluminum siding and cut through only one wall before the teeth broke off. But hey, I have a hood so I can't whine too much.