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| Length | Gauge | |
| mm | mm | inch x gauge |
| 20 | 1.6 | 3/4 x 16 |
| 25 | 1.6 | 1 x 16 |
| 25 | 1.8 | 1 x 15 |
| 25 | 2 | 1 x 14 |
| 30 | 2 | 1-1/4 x14 |
| 40 | 2.36 | 1-1/2 x 13 |
| 40 | 2.65 | 1-1/2 x 12 |
| 45 | 2 | 1-3/4 x 14 |
| 45 | 2.36 | 1-3/4 x 13 |
| 50 | 2.36 | 2 x 13 |
| 50 | 2.65 | 2 x 12 |
| 50 | 3 | 2 x 11 |
| 50 | 3.35 | 2 x 10 |
| 60 | 2.65 | 2-1/4 x 12 |
| 60 | 3.35 | 2-1/4 x 10 |
| 65 | 2.65 | 2-1/2 x 12 |
| 65 | 3 | 2-1/2 x 11 |
| 65 | 3.35 | 2-1/2 x 10 |
| 75 | 3 | 3 x 11 |
| 75 | 3.35 | 3x 10 |
| 75 | 3.75 | 3 x 9 |
| 75 | 4 | 3 x 8 |
| 90 | 3.35 | 3-1/2 x 10 |
| 90 | 4 | 3-1/2 x 8 |
| 100 | 3.75 | 4 x 9 |
| 100 | 4 | 4 x 8 |
| 100 | 4.5 | 4 x 7 |
| 100 | 5 | 4 x 6 |
| 125 | 5 | 5 x 6 |
| 125 | 5.6 | 5 x 5 |
| 150 | 6 | 6 x 4 |