I only bought this to have an indicator for quick use when showing details. I run Okuma's horizontal mills, where all the tools are interchangeable. This holder I bought works fine on the same machine, mounting and removing the holder from the spindle. The other two router bits I use require me to take a flathead screwdriver and pry it between the holder and the machine to get it out. However, no special effort is required to pull it out. However, I have not used it in a tool changer. It onlyβ¦