| Specification | Single Needle tips | ||
| Inner diameter | Diameter | ||
| 15G | 1.45mm | 1.81mm | |
| 16G | 1.25mm | 1.61mm | |
| 17G | 1.12mm | 1.48mm | |
| 18G | 0.90mm | 1.26mm | |
| 19G | 0.70mm | 1.06mm | |
| 21G | 0.58mm | 0.88mm | |
| 21G | 0.51mm | 0.81mm | |
| 22G | 0.41mm | 0.71mm | |
| 23G | 0.33mm | 0.63mm | |
| 24G | 0.30mm | 0.55mm | |
| 25G | 0.26mm | 0.51mm | |
