| Alankara Size | US Size | Diameter / mm |
|---|---|---|
| 10 | 5 3/8 | 16 |
| 11 | 5 3/4 | 16.3 |
| 12 | 6 1/4 | 16.7 |
| 13 | 6 5/8 | 17 |
| 14 | 7 | 17.3 |
| 15 | 7 1/2 | 17.7 |
| 16 | 7 7/8 | 18 |
| 17 | 8 1/4 | 18.3 |
| 18 | 8 3/4 | 18.7 |
| 19 | 9 1/8 | 19 |
| 20 | 9 3/8 | 19.3 |
| 21 | 9 7/8 | 19.7 |
| 22 | 10 1/4 | 20 |
| 23 | 10 5/8 | 20.3 |
| 24 | 11 1/8 | 20.7 |
| 25 | 11 1/2 | 21 |
| 26 | 11 7/8 | 21.3 |
| 27 | 12 3/8 | 21.7 |
| 28 | 12 3/4 | 22 |
| 29 | 13 1/8 | 22.3 |
| 30 | 13 3/8 | 22.7 |
| 31 | 14 | 23 |
| 32 | 14 3/8 | 23.3 |
| 33 | 14 7/8 | 23.7 |
| 34 | 15 1/4 | 24 |