
A complete waste of money, he drilled a hole and roasted. I tried to drill a hole in the kitchen sink to fit a hand soap dispenser and barely got through. I know they work best when wet or with oil due to the heat, I used oil and it didn't matter. Next time I'll pay more for a high quality, big name bat. Also, I'm no hobbyist, I've done this many times for faucets and hose sprayers, I needed a new nozzle and I tried this one, it just didn't work. It seems to have worked for a lot of other people, so that's ok, I was just unlucky.