I actuall have a set of Harbor Freight Uni-bits. They work great. I've had them for about 4 or 5 years. I'm an electrician and I use them all the time drilling out hole in panels. I just recently bought a set of the step bits to try out. I hope they last just as well. You can buy about 4 sets of the HF bits for the price of a Greenlee or Irwin bit.
