... aluminum, and FRP in either sheet or tubular forms.Suitable for all types of mag drill e.g. Nitto, Hougen, Alfra ... 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 rig and ...