Key Specifications/Special Features:
A. Sand-blasted bits. For common use.
B. Tin-coated bits. For durability and corrosion resistant.
C. Diamond coated bits. For professional ues, forbest durability and long time.
D. Colour bits. For easier identification.
| Dimensions (mm) | Length(mm) | Length（inch） |
| 8 | 50 | 2 |
| 9 | 50 | 2 |
| 10 | 50 | 2 |
| 15 | 50 | 2 |
| 20 | 50 | 2 |
| 25 | 50 | 2 |
| 27 | 50 | 2 |
| 30 | 50 | 2 |
| 40 | 50 | 2 |
