As a woodworking enthusiast I need this set. It has all kinds of shape profiles for me to play with. A suitcase is useful for storing these bits so it doesn't get dusty all over the place. The foam holding the bit in place was attached with double sided tape, but I decided to tape them to the body to make it more durable. The bit itself is quite sharp, with a few drops of yellow paint applied to part of the blade, but this does not affect the bit's function. I've used a few of these on my picture frames around the house and a few floating shelves with flush and rounded nozzles over the past few weeks and they all came out very well. No damage to my project or abrasions from the passport.