Knob Specification?

I think I would like to use my own knobs but am unsure of the specifications of the current knobs.

That is, type, shaft diameter, socket depth, total depth of knob, the current knobs overall diameter?

The knobs are 6mm D-Shaft, but I’m not sure of the depth measurements. You can see some different knobs that people use in this thread The alternative knobs (and other modifications) thread

If you decide to use custom knobs, post a photo over there!

Thanks, what is the depth though, so that the clicking does not bump the faceplate?