... full series high quality optical/ophthalmic/medical instrument,CE Digital multi-function Lens Drilling Machine D92I Feature:The computer controls the processing ... .8mm, 1.0mm,1.2mm,1.4mm,1.6mmThickness of cutter: 0.8mmdiameter of cutter: 16mmN.W/G.w: 6.5/7 ... bolt, drill series, drill stand,belt, lens curve clock Digital multi-function Lens Drilling Machine D92I