There is some seriously wrong with that drill bit. The cutting edge are ragged The flutes have a terrible finish. The metal smear behind the lands indicates the they were not releaved for clearance. And that is the worst offense because rubbing and galling generate heat more than rough edges and flutes. Let's face it Dormer of fake, whether it missed several manufacturing steps by accident in a quality plant or is a cheap imitation of a drill the result is the same. A poor drill like that may work on some plastic or Styrofoam but should never come near metal or wood. I am really curious to see what the response from Dormer is.