Originally Posted by warnabrother
I am not trying to be a smart ass... just interested why you'd need a tool...
Because if there is an angle someone finds to make a buck, they'll use it, and marketers figure out a way of convincing us we need it. I'm still trying to figure out why we need to wear gloves while working on our bikes. Used to be a time when a little grease under the fingernails was worn proudly, like a merit badge, or a symbol of passage. Nope, I can't see a reason to use one of those fancy stem-pullers. If you install your tubes and tires correctly, you'll never need them.