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.

Dimensions:

• 14mm high
• 20mm diameter
• 6mm depth for shaft