I bought this Forstner drill to install Schlage single sided latches in an existing door. I needed to drill a 1.5" diameter, 1.25" deep hole with a flat bottom, so a hole saw would take a lot of work. I did a little research and Freud had the best reputation and the serrated edge bit takes less pressure and generates less heat so I chose it to work with. This Freud drill worked great, perfectly clean on the sides and bottom of the hole. I was concerned I would have to use it in a hand drill and 1.5" seems like the limit for a hand drill, but the slow and steady power did the trick. Freud's drills are more expensive than others, but the quality exceeds all expectations. The price difference for this size is only about $10, which probably won't break your project's budget. I recommend these 100%