Review on Center Centering Degree Combined Countersink by Timothy Barnes

I really like these tools because they can do both countersinking and pilot hole drilling. They are good and durable. The largest will likely have trouble with some of the smaller chucks, but other than that they work very well. Although they are new I already had a set like this, I have been using them for almost 20 years and they have never stopped working great. The only reason I had to buy them again was because the rest got lost when we moved.