This is a knob.
You can use it for your Ender 3 V3 SE, i don't know if it works for older versions of the Ender 3.
I printed it with 0,2mm and 0,16mm, tree supports and 20% infill.
Maybe you need to twist the ball-knob before you use it on your printer.
Have fun!
Please share your experience in the comments.
The author marked this model as their own original creation.