This top only fits Threadless stems, NOT internally threaded stems or push-fit stems in bioplastic! It has no threads at all, so it cannot be screwed into any other piece of jewelry.
This attachment cannot be sterilised in an autoclave.
Roseline® is colored jewelry, they are not "colored" in the classic sense, it is 316L Steel or Titanium that is covered with a thin plasma film (PVD coating). The thin film is very strong and does not fade. The technology has been used since the late 80's and is used, among other things, for orthopedic implants to provide an extra durable surface.
Roseline® looks just like Rose Gold, and is incredibly popular in our webshop.