... ,front curve and rear curve,and available for ..... Name:Automatic Lens Groover & Beveller Model:LY-12ATSummary: For processing half-frame glasses and rimless ... curve, front curve and rear curve, and automatic beveling rimless or half-frame glasses lens.Detailed Product Description: 1, It made ... ,plastic,glass lenses.3, Groove width: 0.65mm.4, Lens diameter: from 18 to 70mm.5, Chamfer angles of lenses ...