2-1/2" - 7" Adjustable Can Light Hole Saw

I bought one of these after hearing about them so my son and I could install can lights in a recently redone ceiling. After locating the holes we were done in minutes. Later that year I had a contractor remodeling our bathroom and install can lights. Had was in the bathroom using a little hand saw which was taking a lot of time and making a mess. I offered him the tool and he was amazed that such a product existed. He's back again months later with one and says it's the best thing he's ever used and recommends it to everyone. Of course you occasionally will need to buy new blades but the time saved....Its a no brainer.