This is a replacement dial knob for Creality filament dryer Dry Box 2.0.

The dimensions are almost identical to the original part, but I encountered an issue where the button could not be pressed properly on my dryer, so I slightly adjusted the thickness to resolve this problem.

It can also be used as a knob for general 6 mm shaft potentiometers, not just for the dryer.

I use TINMORRY PETG ECO filament which I like it.