... centr curue,front curve and rear curve,and available for ..... Name:Automatic Lens Groover & Beveller Model:LY-12ATSummary ... steel panel with groove, DC motor, imported diamond wheel.2, Suitable for PC,plastic,glass lenses.3, Groove width: 0.65mm.4, Lens diameter ... angles of lenses can be controlled automatically precisely.6, Suitable for plastic and glass lenses.7, Atuomatic chamfering speed quickly.8 ...