These hole saws should suit the homeowner who only needs to drill a few holes. I don't think they will last long enough for a pro to be worthwhile despite the low cost. A homeowner or someone new to its use will also appreciate the included mount. I bought this kit to drill a 1 3/8 inch hole for a table top hot water dispenser. The bracket was helpful and the drill almost worked! I found that my countertop was too thick, about 1 1/4 inches, and this drill bit's opening wasn't deep enough to complete the hole. At approximately 90% of the drilling progress was halted. It wasn't obvious at first, but once I realized I had no choice but to go to a big store and buy the right tool to get the job done. That drill alone costs almost as much as that whole jig.