CHINESE
ENGLISH
| 1/2inch，Needle length12.7MM | 1inch，Needle length25.4MM | the inside diameter of（MM) | Outer diameter(MM) |
| 14G1/2 | 14G1" | 1.55 | 1.84 |
| 15G1/2 | 15G1" | 1.36 | 1.84 |
| 16G1/2 | 16G1" | 1.2 | 1.64 |
| 17G1/2 | 17G1" | 1.12 | 1.48 |
| 18G1/2 | 18G1" | 0.84 | 1.27 |
| 19G1/2 | 19G1" | 0.7 | 1.05 |
| 20G1/2 | 20G1" | 0.6 | 0.91 |
| 21G1/2 | 21G1" | 0.51 | 0.82 |
| 22G1/2 | 22G1" | 0.41 | 0.72 |
| 23G1/2 | 23G1" | 0.34 | 0.64 |
| 24G1/2 | 24G1" | 0.3 | 0.56 |
| 25G1/2 | 25G1" | 0.26 | 0.51 |
