Drill ream file rout and cut wood plasterboard plastic and aluminium with this 2 stage saw bit use the drill part of the bit to drill the starting hole then use the milled shaft with specially designed teeth to cut the material quick clog free cutting titanium coated high speed steel key features titanium coated high speed steel two stage drill bit cross milled non clog drill surface use in any direction use as a drill saw rotary file reamer or router hss coated in titanium nitrate ti n polished