Great work. I used it to drill five holes in the basement for the bathroom. I have a Milwaukee right angle cord drill that I used for heavy duty use. I wanted to drill at my own pace rather than renting a rig and drill bit and returning them 24 hours later if I had a problem. I had to assemble an adapter to convert the hex head to a 1/2" drive bit. I bought a Menards 1-5/8" socket and a 1" to 3/4" adapter to convert it to a 1 /2" chuck. About $15 for additional services. Looks a little wobbly but works great. Don't use a light drill. You'll burn it. I directed a steady stream of water at the cutter heads. It took about 10-12 minutes Minutes to drill 3-1/2". I think it can drill a hundred holes depending on quality.