Features: 1. This machine is multi-functional special-purpose equipment for perforating and grooving of rimless frame; 2. It is most applicable to CR lens and PC lens to perforate adn groove; 3. Opposing taper drill bits system allow holens to be drilled from both sides simultaneously for precision placement and avoids chipping and breaking of all lenses, especially those made of glass; 4. The adjustable groove-cutting device to get accurate depth of groove cutting. Technique Parameters: Voltage: 110V/60Hz 220V/50Hz Power: 50W Weight: 3kg Dimensions: 260x220x350mm