Covers / caps for standard 17mm wheel bolts.It may be possible that it needs a slight scale to make sure they fit snugly on your bolts. Depends on the printer and material.

I printed mine with white Pet-G.

Print instructionsI used a large nozzle, 0,8 or 1mm, prints fast and layers bond superb. I wanted it to be sturdy if I pull them out. Make sure you have some space left to reach the back of the cap with a tool.