European and American stainless steel ring titanium steel ring hot Nepalese dragon pattern silver gold dragon piece men's ring $ 4.26 Modeling: Geometry United States (U.S) 4 5 6 7 8 9 10 11 12 13 14 15 Diameter (mm MM) 14.9 15.7 16.5 17.4 18.2 19 19.9 20.7 21.5 22.3 23.1 23.9 Circumference (mm MM) 47 49 52 55 57 59.8 62.4 65 67.5 70 72.8 75.3