The Steel Basicline® Nostril Stud is the inconspicuous stud for your nose, which does not lay it on too thick. Its balls diameter is 2.5 mm. Thanks to the bended tail the stud stays rock-solid on its place, but can be removed without any problems. The stud is available in strength of 1.0 
The article can, like all basics, be sterilised in an autoclave and due to the skin friendliness of the material it is absolutely harmless to allergic persons.
 
1 mm thickness
2,5 mm ball size