specifications︰ Features:
1. Manual Adjustable, precise controlling

2. Suitable for plastic and glass lenses

3. Adjustable groove position (front-central-rear)

4. Accurate on all profiles

5. Adjustable groove depth:
from 0 to 0.7mm

6. Groove width: 0.65mm

7. Lens thickness:
from 1.5 to 11mm

8. Lensφ：from 18 to 70mm

9. Power: 90W