Omega 11137 hole size

[Omega48]

Does anybody know the actual diameter and depth of the hole in mm, without the whole knot and the cup?
I like the handle and I am wondering if it could fit the 25mm Muhle STF.

 

[KW Driver]

Grab the knot as close to the ring as you can and simply twist and pull the knot out. The knot is set within the plastic cup and it’s friction fit into the handle. Then measure for yourself. Then simply hog it out if necessary with your very own handy dandy home lathe

 

[Omega48]

Nope. Tried it, used a vise as well. Two brushes, nothing.
Maybe the plastic ones.