I thought it would be nice to have as I do a lot of simple woodworking. It should have been good. It could be good, but no. The drilling shaft "vibrates" strongly. I used the supplied Allen wrench to tighten the set screw but that wasn't a problem. The real problem was where the part was with the drill bit on one end and the #2 Phillips slot on the other. There's plenty of play where you put it in the collar. It doesn't stay in place very well so there is some wobbling. Not good.