My electrician friend gave me a hand to add more lighting in the upstairs bathroom today. These are the neatest lights I?ve ever seen for home lighting thus far. The box has a transformer inside converting to 12v dc. You just strip about 3/4? of wire and they slide and lock into circuit joiners. They don?t even need a box to mount them off of. They?re so lightweight all they need is a 4? hole cut with a hole saw in the gyprock fold the spring loaded tabs and shove them up and your done. Tons of light and super cheap. My friend said the older style pot lights you could count on an hour per light to install,these ones took us 10 min each after we got the wire run. He bought a kit of Milwaukee tools awhile ago and other than a few uses of the circular saw never used them at all. The kit originally included a big work light and a few 4AH batteries which he really wanted and offered these to me if I wanted them. Didn?t take me long to say thank you lol. We ordered a couple new batteries off Amazon so I can run them. They?re not brushless motors but most of it will only get limited use on the job. Once I start getting bigger drills I?ll hold out for brushless ones.