... of hardened H.S.S, cobalt steel. TiAIN coating availableideal for drilling structural steel and metalspecial designed double-action tooth cuts ... flutes have good performance in chip removal and friction resistanceHandle for fast interface.Apply to Nitto, Alfra, BDS, Ruko, drilling ... of vertical drilling machine, radial drilling machine, milling machine, lathe, etc.We also have Pilot Pin Annular Cutter ...