ring in the form of a nut with a bolt 3D print model

hello friend who came to my page

the archive contains 10 3d models of rings, in stl format with dimensions 17mm, 17.5mm, 18mm, 18.5mm, 19mm, 19.5mm, 20mm, 20.5mm, 21mm, 21.5mm. ring width 7mm. the approximate weight of the ring is 17 mm-6.5 grams, 21.5 mm-8 grams in silver. shrinkage is not taken into account in the model. the model is ready for 3D printing. the models were tested in the Magics program.

please write if you have any questions