| Model |
Specification |
Picture |
Extension Rod
（C Rod Screw） |
100L |
φ36×Available 100mm |
 |
| 200L |
φ36×Available 200mm |
| When you requested to make deeper hole than the depth of the diamond bit.Can’t be used less than 32mm diamond bit. |
Extension Rod
（A RodScrew） |
100L |
φ41×Available 100mm |
 |
| 150L |
φ41×Available 150mm |
| 300L |
φ41×Available 300mm |
| 500L |
φ41×Available 500mm |
| When you requested to make deeper hole than the depth of the diamond bit.Can’t
be used less than 41mm diamond bit. |
