... and FRP in either sheet or tubular forms.Suitable for all types of mag drill e.g. Nitto, ... H.S.S, cobalt steel. TiAIN coating availableideal for drilling structural steel and metalspecial designed double-action ... friction resistanceHandle for fast interface.Apply to Nitto, Alfra, BDS, Ruko, drilling rig and other magnetic drill machine ... .We also have Pilot Pin Annular Cutter for magnetic drill machine