US finger sizes 13.75|13|12.25| 11 | 10.25 |9.5| 8.25 (inner diameter 23.2|22| 21.3|20.4 | 19.8| 19.1| 18.2 mm). silver weith 16 gr. 14k gold 20 gr .There 3dm file for editing and stl for printing. The size of the model you can see on one of the photos presented here. 90% of my 3d models have been checked: made wax and finished product in gold or silver .Model are for 3D printer or cnc machine.Made in program Matrix .The model is tested and verified in the program Magics.