Excellent drill. I've used it on my CNC machine to do some small details on some coasters I make for co-workers. Get amazingly fine detail with the right speed and dive settings
that I've used on a few projects now and for the price they were good. They are sharp enough for my needs and I was able to carve some nice details with them. As mentioned, they're fairly cheap, so if they're just enough for a couple of projects, I'm happy.