Bergeon 5236C Swiss-Made Hi Precision Ring Finger Gauge

These ring sizers are made of hi-impact durable plastic and are colored coded for quick reference. Marked with USA sizes (1 thru 15) and diameter in mm (13 thru 24.2 mm) on one side, and French sizes (1 thru 36) and circumference (41 thru 76 mm) on the other side. You get 36 individual ring sizes instead of the usual 30. The extra sizes are sizes in 3, 5, 7, 8, 10, 12, & 13. Premium quality.