It's a 'soft touch' T18 knob that works great with our Panel Mount 10K, Panel Mount 1K, and Panel Mount 100K potentiometers.  The knob is designed to set directly on the potentiometer's ridges so it's an easy & secure fit. It has a nice feel, with a rubbery grip, tweaking it is quite fulfilling https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2021-04-06 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2021-11-23 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2021-11-30 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2022-10-14 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2022-10-21 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-03-13 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-03-14 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-03-15 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-03-16 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-06-21 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-06-22 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-06-23 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-06-26 https://elecena.pl/product/17498639/potentiometer-knob-soft-touch-t18 2023-06-27