I have lots of nice previously owned reamers from many sources, and usually have the one I need for a job, but it can take time to find it. They are sorted by nominal size, but many are really difficult to read, and I never know if they have been previously sharpened, so I have to measure or test them, and also pick one the right style for the hole type as well. Sometimes have to hone it sharp, too. That all takes time, lots of it. I have to admit that a set of over/under reamers in basic fractional sizes like Bruce posted sure sounds quick and easy for lots of work.