Originally Posted by dbworld4k
It's similar, but not exactly the same. The base collar is slightly larger on the F10 knob vs. ZHP. I only know this because the custom machined collar I had made for a ZHP knob won't fit the F10, lol.
Now you got me curious about this. I quick eyeball shows the F10 knob is a bit taller. and yes you are right, the base is slightly larger.
Now back to my for sale item.