As I recall, I am getting old and losing my memory, so beware... bodkins, and almost all the other three blade heads of that generation were built so that the blades are two piece, meaning that when you sharpen them you are sharpening two sheets of metal that come together at the sharp edge. That makes them a bit tougher to get really sharp. As above, they are a great, inexpensive small game head. I'm pretty certain a bunch of big game has been killed using them over the years as well.
ChuckC