I use this in my front panels of different DIY-projects. Whenever I want
to bring the potentiometer to the backpanel (close to the inputs).
You have to align carefully this bearing, axle to the potentiometer for
a smooth action. Sometimes you have to sand / grind a little bit.
Use some minimum oil or grease and you will have a smooth feeling
when turning the volumeknob (also depends on the potentiometer!)
Dirk H., Germany