... ,50,75,100mmM2 &M35 materialcoating availableThe hss annular cutter has specifications of Φ12-100mm and 30, 50 ... S.S, cobalt steel. TiAIN coating availableideal for drilling structural steel and metalspecial designed double- ... good performance in chip removal and friction resistanceHandle for fast interface.Apply to Nitto, Alfra, BDS ... .We also have Pilot Pin Annular Cutter for magnetic drill machine