Size of ring in mm July 8, 2019 16 32 64 128 Size 7 ring in mm Size 8 ring in mm Size 6 ring in mm Size 9 ring in mm Size 10 ring in mm Size 5 ring in mm Size 12 ring in mm Size 11 ring in mm Size 13 ring in mm Size 4 ring in mm Size 14 ring in mm Size 15 ring in mm