Concentric knobs: dealers?

[Bucksears]

There have been threads years ago asking this question, and I know Smallbear has one pedal-sized (not guitar-sized) concentric knob set. But who else sells them these days?

Part of the problem is:
1) Finding some that are small enough - almost all of them are for guitar/bass
2) Finding some that have matching single knobs if you were putting them on one pedal.

The kind Boss uses for the Metal Zone, etc, would be awesome, but they probably have proprietary potentiometers that only go with them.