They are super easy to clip on and remove from the spring-loaded sliders inside the CFS lid.
One is with SUNLU written on the top, other one without text.
EDIT: Because of someone commenting 5mm is better than 6mm I added a 5mm version.
If you have a different brand with a different diameter, let me know so I can create one with the right thickness.
I recommend to print them using PETG (bit flexible with the clips) on a smooth build plate (less friction on the spool). Print without support needed :)
When attaching the clip, make sure it's not stuck behind the edge of the lid connection, it should move freely with the bumper on the springs.
The author marked this model as their own original creation.