Features:

1. Manual adjustable, precise controlling

2. Suitable for plastic and glass lenses

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

4. Accurate on all edges

5. Adjustable groove depth: from 0 to 0.7MM

6. Groove width: 0.6MM

7. Lens diameter: from 18 to 70MM

8. Power: 95W