3D printable files (STL),
The file is available in 4 formats- 3dm, stl, 3ds, skp
sizes 16.5-21 diametrRing size - 18.2 diametr Weight 585 - 8gram , weight 750 - 9.57 gram3dm file & stl , weight reports and realistic renderings are includedDetailed information see photo3D print ready: