There is nothing good in this set. I wish I could say it was me. The chisel head wobbles on the chisel causing the sides to become uneven. There must be a Temkin bearing to ensure smoother operation. The chisel head rests against the drill motor chuck. I had to shorten the Faustner bit's shank by about 1.5 inches to actually make it work the way a plug-in drill is supposed to work. Just not well built, very cheap. I think you get what you pay for.