| ROUND |
 |
 |
| Ø External |
Ø Internal |
| cm. 20 |
cm. 15 |
| 23 |
17.70 |
| 25 |
20.00 |
| 28 |
22.50 |
| 30 |
25 |
| 32 |
26.80 |
| 35 |
30 |
 |
 |
|
| RECTANGULAR |
| Band height cm. 2,5 from every side |
 |
| External cm. |
Internal cm. |
| 17x37 |
12x32 |
| 17x42 |
12x37 |
| 18x25 |
13x20 |
| 19x29 |
14x24 |
| 22x27 |
17x22 |
| 27x32 |
22x27 |
| 24x34 |
19x29 |
| 30x39 |
25x34 |
| 35x41 |
30x36 |
 |
 |
|
