美制特殊牙(UN12)
| 美制特殊牙UN12 | 牙數 | 下料孔徑 |
| 1-1/16 | 12 | 24.8 |
| 1-3/16 | 12 | 28 |
| 1-5/16 | 12 | 31.2 |
| 1-5/8 | 12 | 39.1 |
| 1-3/4 | 12 | 42.3 |
| 1-7/8 | 12 | 45.4 |
| 2” | 12 | 48.6 |
| 2-1/4 | 12 | 55 |
| 2-1/2 | 12 | 61.3 |
| 美制特殊牙UN12 | 牙數 | 下料孔徑 |
| 1-1/16 | 12 | 24.8 |
| 1-3/16 | 12 | 28 |
| 1-5/16 | 12 | 31.2 |
| 1-5/8 | 12 | 39.1 |
| 1-3/4 | 12 | 42.3 |
| 1-7/8 | 12 | 45.4 |
| 2” | 12 | 48.6 |
| 2-1/4 | 12 | 55 |
| 2-1/2 | 12 | 61.3 |