This is a small sheath/box for up to 19 nozzles with M6 thread (like E3D V6).
Each adapter pit features six little 'flat springs' so that the nozzles have a safe grip and don't get lost even if the box is turned head over, while they can still be inserted and picked with only little force.
See also my hex bits holder with the same gripping mechanism
Best print in 0.15 quality
No supports needed
The author marked this model as their own original creation.