I bought this set because I never had the right size hole saw when I needed it. I don't live near big stores. A hole saw can cost around $20. If for some reason I still don't have the right size. I can only ever buy the saw and use the mandrel in this set. Costs $30+. I've only cut a few holes with this saw, but it cuts well and the plug is surprisingly easy to remove from the saw. Also the padded kit is good for keeping everything together.