... grooving of rimless frame. Name:Lens Drilling & Notch-cutting MachineModel:LY-988ASummary: This machine is multi-functional special-purpose equipment for perforating ... .Detailed Product Description: 1, LY-988A made of aluminium pipe, with light or handrail, big power motor. 2, It is most ... accurate depth of groove cutting.5, Diameter of hole: 0.8mm-2.8mm, widthe of groove: 0.8-1.0mm.Parameter:Electric ...