Review on Pit Bull CHIS801 Mandrels 16 Piece - The Ultimate Tool Set for Precision Drilling Tasks by Darnell Evans

I needed a certain size to cut a hole in several inches of plywood. It worked, although getting the plug out of the drill was a bit difficult. (I had to disassemble and remove it from the back.) I also cut a clean piece through the radiator shroud. The plastic case broke right out of the box, so don't plan on that. Overall I think it does a decent job for limited use. If you're looking for something you can use over and over again, I suspect it won't last long. Considering the price, it couldn't be better. Buying the whole set was smaller than the size I needed. I would buy it again for my use.