looking for conical cue 11.5-12.0mm tip..any suggestions?

[Franky4Eyes]

............ See below

 

[Franky4Eyes]

right now I'm using 11.5 conical
I like it..but am interested in trying just a bit bigger
I'd like to try a z shaft, but that's not a true cone, is it?
cheap is ok, good even..really just looking to test out the shape

edit: right now I'm only interested in wooden shafts/cues

The Predator Z shafts are really great.
The latest model Z3 is 11.85mm.
Says conical hybrid, but feels like a standard conical taper and has a really nice hit on a wood to wood joint.
Maybe a local cue maker could take an existing shaft and modify it to your desired dimensions.