Yeah, a guy brought me his wheel to get the lockring off. It took some drastic measures to get it off, and thank goodness it was a Dura Ace lockring. That thing is made of some really hard steel.

Someone give me a little boost and tell me what the rotafix method is. I've seen the rotofix sprocket now, but is that all it is? The video showed how it's useful for getting your lockring off or on. Does it have a use beyond that?