NOTE: The shop I used to make the shafts has been closed due to the COVID-19 (coronavirus). For the moment, I am limiting orders to 1. Thank you.
The Large Extension Knob is about 13/16 inch in diameter. About the same size as a Nickel.
Fits All My Poly Variable Capacitors.
The Large Extension Knob comes with the knob, extension shaft and screw.