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GDP WORLD
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Size chart
Measure the internal diameter or circumference of a ring of yours.
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Circumference | Internal Diameter | GDP / IT | UK | USA |
---|---|---|---|---|
41 mm | 13 mm | 1 | ||
42 mm | 13,3 mm | 2 | ||
43 mm | 13,6 mm | 3 | ||
44 mm | 14 mm | 4 | F | 3 |
45 mm | 14,3 mm | 5 | F 1/2 | |
46 mm | 14,6 mm | 6 | G | 3 1/2 |
47 mm | 14,9 mm | 7 | H | 4 |
48 mm | 15,3 mm | 8 | I | 4 1/2 |
49 mm | 15,6 mm | 9 | J | 5 |
50 mm | 16 mm | 10 | K | 5 1/2 |
51 mm | 16,2 mm | 11 | L | |
52 mm | 16,5 mm | 12 | L 1/2 | 6 |
53 mm | 16,8 mm | 13 | M 1/2 | 6 1/2 |
54 mm | 17,2 mm | 14 | N | 7 |
55 mm | 17,4 mm | 15 | O | |
56 mm | 17,8 mm | 16 | O 1/2 | 7 1/2 |
57 mm | 18,1 mm | 17 | P 1/2 | 8 |
58 mm | 18,5 mm | 18 | Q | 8 1/2 |
59 mm | 18,8 mm | 19 | R | 9 |
60 mm | 19,1 mm | 20 | S | 9 1/2 |
61 mm | 19,5 mm | 21 | T | 10 |