... curve and rear curve,and available for ..... Name:Automatic Lens Groover & Beveller Model: ... LY-12ATSummary: For processing half-frame glasses and rimless-frame ... groove, DC motor, imported diamond wheel.2, Suitable for PC,plastic,glass lenses.3, Groove width: 0.65mm ... can be controlled automatically precisely.6, Suitable for plastic and glass lenses.7, Atuomatic chamfering ...