Hi Von, did you give it a go? How's the "new" swivel feel?

I've been using a different kind swivel myself, it's similar to this:
The fish-eye bolt is connected to a ball which adds a lot more dimension to the speed bag's movement. You could say that it turns that lovable speed ball that you could hit forever and as long as you liked into "Huevo de Diablo."

Trust me, after you after you install that baby you'll practically have to learn how to hit the speed bag all over again.