The file contain a crown ring available in different sizes: 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 24 - 26 - 28 - 30 (Swiss).
All rings are closed and verified meshes, so the files are ready to print.
You can find all the rings dubdivided in different files in the compressed archive, or download all the rings in the 3dm file.
The indicated weight is on 20 swiss size.