MICRO miller MF 70 is also available as CNC-ready version (NO 27 112). Tungsten milling cutters With two flute cutters and fishtail profile (cutting to the centre). Enables lowering into non-bored work pieces. For grey-cast iron, hardened cast iron, steel, cast steel, brass, aluminium, glass, plastic and carbon fibre. One piece each 1 – 2 and 3mm.