Knobs are a great way to finish off your project and make it easier to adjust the level of your death ray. This knob mates to a 0.25" shaft with a set screw.
The main body of these knobs have a 14mm, but extend to 32mm overall. They also have a brass insert for a tighter fit with the shaft. You can use them on the potentiometers, switches, rotary encoder and more.
•6mm depth for shaft