They have a decent price but don't expect high quality. I bought them for an art project I had to do for school. I sharpened a piece of wood with the smallest blade and broke it in half. I wasn't driving very fast by any means, I wasn't in a hurry and I heard a big click and knew something was wrong. I took the bit out of the machine and it was just a metal shank and the cutting edge was no longer attached. I used the big pieces to do most of the cutting and went with the smallest to get into the hard to reach places and have it break while doing a fairly small job, it's frustrating. But other than that, all other parts worked perfectly. Each came with a plastic holder and was labeled for size.