These are AlcoKnob KA-1250A (silver finish - not gold)
Polished Aluminum Fluted Pointer Knob
for ¼ Inch Shaft

1-1/4 inch outside diameter
3/4 inch tall

With two set screws included

These are factory new parts. They have never been installed and have not been recovered from manufactured electronic components.

Combine Shipping with other Luddite Electronics Products

There were 21 pieces at the time of this listing. These are being sold individually.