The Chapman set is the way to go on a super tight frame screw.
The bits are hollow ground and hard as blazes.
The ratchet handle (which is what I recommend) gives you a) good control and b) outstanding leverage.
The sets have about a million different bits and one of them is perfect for the size screw you are taking out.
Might want to hit it with some PB Blaster or Liquid Wrench.
My reading of history convinces me that most bad government results from too much government. Thomas Jefferson