Can drill deep hole with diameters 0.3mm-3.0mm Can drill wire cut starting hole, fitter hole, jet hole, gas hole, Can easily erode the drill and screw tap etc which broken in the workpiece and not destroy the screw thread of the holes. The speed of drilling hole is 30-60mm depth per minute(it is different for different material) Can drill small hole on the various conductive materials, especially Stainless Steel, Chilled Steel, Copper, Aluminum and hard alloy etc. Z axis with depth control function.