Hi - Could be a square drive or a star drive. If you can take a picture the head of it and take it to your local hardware store, they will be able to fix you up with the right bit. Good luck. Bill
I read somewhere (most likely on this forum) the screws on the outside of my Haulmark required a "double-square #2" bit. Like MtnDon said, "It looks like a star, but isn't." I located some for sale on ebay and a couple of other places on line, but I needed to pull only one screw. I tried a standard #2 square. It worked fine.
Yep, mine looked like a star but wasn't. When none of my star bits fit, I even called the manufacture to ask what super top secret bit they use. It was a #2 square! I've called them with a few other silly questions too