STEP #1   Measure ring finger size of preferred hand ( use chart below for conversions and units)
       STEP #2   Locate your size  on the chart and notice which color region its in ( Blue, Purple, or Red )
       STEP #3   If your personal ring finger size resides in the BLUE colored region you will need a size SMALL
                       "                                                              " PURPLE colored region you will need a size MEDIUM 
                       "                                                              " RED colored region you will need a size LARGE
      STEP #4    NOTE: If you have knuckles larger than the base of your ring finger, then use knuckle measurement instead.

WWW.BSPRODUCTS.NET                                                                International Ring Sizes: USA  Size Diam. -inch Diam. in mm Metric -mm British  French  German  Japanese  Swiss  5 .618 15.70 49.0 J 1/2 - 15 3/4 9   5 1/8 - 15.80 49.3 K 50     10 5 1/4 - 15.90 49.6 - -       5 3/8 - 16.0 50.0 K 1/2 -   10   5 1/2 .634 16.10 50.3 L 51 3/4 16   11 3/4 5 3/4 - 16.30 50.9 - -       5 7/8 - 16.41 51.3 L 1/2 -       6 .650 16.51 51.5 M 52 3/4 16 1/2 12 12 3/4 6 1/4 - 16.71 52.2 M 1/2 -       6 1/2 .666 16.92 52.8 N 54 17 13 14 6 3/4 - 17.13 53.4 N 1/2 -       7 .683 17.35 54.0 O 55 1/4 17 1/4 14 15 1/4 7 1/4 - 17.45 54.7 O 1/2 -       7 1/2 .699 17.75 55.3 P 56 1/2 17 3/4 15 16 1/2 7 3/4 - 17.97 55.9 P 1/2 -       8 .716 18.19 56.6 Q 57 3/4 18 16 17 3/4 8 1/4 - 18.35 57.2 Q 1/2 -       8 1/2 .732 18.53 57.8 - - 18 1/2 17   8 5/8 - 18.61 58.4 R 59     19 8 3/4 - 18.69 58.4 - -       8 7/8 - 18.80 59.0 R 1/2 -       9 .748 18.89 59.1 - - 19 18   9 1/8 - 19.10 59.4 S 60 1/4     20 1/4 9 1/4 - 19.22 59.7 - -       9 3/8 - 19.31 60.0 S 1/2 -       9 1/2 .764 19.41 60.3 - - 19 1/2 19   9 5/8 - 19.51 60.6 T 61 1/2     21 1/2 9 3/4 - 19.62 60.9 - -       10 .781 19.84 61.6 T 1/2 - 20 20   10 1/4 - 20.02 62.2 U 62 3/4   21 22 3/4 10 1/2 .797 20.20 62.8 U 1/2 - 20 1/4 22   10 5/8 - 20.32 63.1 V 63     23 3/4 10 3/4 - 20.44 63.5 - -       11 .814 20.68 64.1 V 1/2 - 20 3/4 23   11 1/8 - 20.76 64.3 W 65     25 11 1/4 - 20.85 64.7 - -       11 3/8 - 20.94 65.0 W 1/2 -       11 1/2 - 21.08 65.3 - - 21 24   11 5/8 .830 21.18 65.7 X 66 1/4     26 1/4 11 3/4 - 21.24 66.0 - -       11 7/8 - 21.30 66.3 X 1/2 -       12 .846 21.49 66.6 Y 67 1/2 21 1/4 25 27 1/2 12 1/2 .862 21.89 67.9 Z 68 3/4 21 3/4 26 28 3/4 12 3/4 - 22.10 68.5 Z 1/2 -       13 .879 22.33 69.1 - - 22 27