| ROUND |
 |
 |
| Ø External |
Ø Internal |
| cm. 16 |
cm. 10.50 |
| 18 |
12.60 |
| 20 |
14.20 |
| 23 |
16.00 |
| 25 |
17.60 |
| 28 |
20.30 |
| 30 |
22.00 |
| 32 |
23.60 |
| 35 |
26.50 |
| 38 |
28.50 |
| 40 |
29.80 |
| 42 |
32.80 |
| 45 |
34.20 |
| 50 |
38.50 |
| 55 |
43.60 |
| 60 |
48.60 |
|
| RECTANGULAR |
 |
| Dimensions cm. |
| 15x20 |
20x30 |
| 15x25 |
20x35 |
| 15x30 |
20x40 |
| 15x35 |
20x45 |
| 15x40 |
25x35 |
| 18x30 |
25x40 |
| 18x35 |
30x40 |
| 18x45 |
35x45 |
| 40x50 |
 |
| Band height cm.3 from every side |
|
