This high quality pneumatic drill tapping machine is for copper, iron, aluminium, steel, stainless steel, plastic, wood Gweike Pneumatic dril ... Air Power Tapping Machine Information: *Applicable Materials:Tapping for copper, iron, aluminum, steel, stainless steel, plastic and wood, and other ... limited tap holderHexagon Wrench lestInstruction manual High quality pneumatic Drill Tapping machine