| Wire Diameter MM | Crimp Tube No. | Wire Guardian |
| 0,25 (.010 ") | 1 | 1,2 |
| 0.30 (.012 ") | 1 | 1,2 |
| 0,33 (.013 ") | 1,2 | 1,2 |
| 0.38 (.015 ") | 2 | 1,2 |
| 0.46 (.018 ") | 2 | 1,2 |
| 0.51 (.020 ") | 2 | 1,2 |
| 0.53 (0,021 ") | 2 | 1,2 |
| 0,61 (0,024 ") | 2,3 | 2 |
| 0,66 (0,026 ") | 3,4 | 2 |
| 0.76 (.030 ") | 4 | No |
| 0.91 (.036 ") | 4 | No |
| STANDARD | STANDARD | DIAMETER | CIRCUMFERENCE |
| Italian | USA | cm | cm |
| 9.5 | 5 | 1.58 | 4.96 |
| 10 | 1.6 | 5.02 | |
| 10.5 | 5.5 | 1.61 | 5.06 |
| 11 | 1.62 | 5.09 | |
| 11.5 | 6 | 1.63 | 5.12 |
| 12 | 1.65 | 5.18 | |
| 12.5 | 1.66 | 5.21 | |
| 13 | 6.5 | 1.68 | 5.28 |
| 13.5 | 1.7 | 5.34 | |
| 14 | 1.72 | 5.4 | |
| 14.5 | 7 | 1.73 | 5.43 |
| 15 | 1.74 | 5.46 | |
| 15.5 | 1.76 | 5.53 | |
| 16 | 7.5 | 1.78 | 5.59 |
| 16.5 | 1.8 | 5.65 | |
| 17 | 8 | 1.81 | 5.68 |
| 17.5 | 1.83 | 5.75 | |
| 18 | 1.85 | 5.81 | |
| 18.5 | 8.5 | 1.86 | 5.84 |
| 19 | 1.88 | 5.9 | |
| 19.5 | 9 | 1.9 | 5.97 |
| 20 | 1.92 | 6.03 | |
| 20.5 | 1.93 | 6.06 | |
| 21 | 9.5 | 1.95 | 6.12 |
| 21.5 | 1.96 | 6.15 | |
| 22 | 10 | 1.98 | 6.22 |
| 22.5 | 1.99 | 6.25 | |
| 23 | 2 | 6.28 | |
| 23.5 | 10.5 | 2.02 | 6.34 |
| 24 | 2.04 | 6.41 | |
| 24.5 | 2.05 | 6.44 | |
| 25 | 11 | 2.06 | 6.47 |
