20x 3018 type knob with scaleKnob features:
diameter: 29 mm (including scale)
knob diameter: 14.5 - 17.5 mm (truncated cone)
total height: 18 mm (including scale)
knob height: 13.5 mm
potentiometer axis diameter: 6 mm
axle hole depth: 13.5 mm
material: ABS
mounting method: the knob is equipped with a screw, thanks to which the knob can be mounted on a potentiometer with a smooth axis, as well as a serrated or truncated axis, so it fits all potentiometers with a 6 mm axis regardless of the type of axis finish
By buying 1 set on this auction, you buy 20 pcs.
This item may be listed on another auction in a different quantity and price, maybe better suited to your needs. On the website
https://kompelektronik.pl/allegro/ you will find links that make it easier to search for items on my auctions.