Great set of bimetal saws, not a contractor. (But you already knew that) I have nothing to complain about, poke holes in everything and do it well. The first drill bit in the kit was curved so the hole was not round and larger than it should have been. Remove and test the other two INCLUDED drill bits and they are good and straight. Even if it weren't, the drills are cheap and make everything work amazingly. I wish other reviewers would stop complaining about the little things. small and therefore will not make a perfect hole. So you get what you pay for. But they work well and meet my needs well!