I recently bought an old Collins axe at a flea market for $5. I am currently refurbishing it and I want to invest in a very nice handle. I know Gransfors Bruks makes some of the best axes in the world and I found a place to by replacement handles for them. However, they say to make sure you buy the right handle for the right model. I was wondering if a Gransfors Bruks handle will fit on my Collins axe head. It would be helpful to know if that would work before I waste $35 on a handle that won't even fit. Thanks