Choose lens frame with supplementary lenses, drill three holes after that pupil height line and PD were drawn. And then replacing the pattern, it can and be directly installed and used at Edge.
Detailed Product Description:
1. Be made of AC motor.
2. Drilling three holes directly on demo lens together.
3. Don’t need make another pattern.
4. Safe, precise, fast speed, competitive price.
Electric Voltage: 220V/50Hz or 110V/60Hz