... 100mmDOP 25,50,75,100mmM2 &M35 materialcoating availableThe hss annular cutter has specifications of Φ12-100mm and 30, ... types of mag drill e.g. Nitto, Hougen, Alfra, Rotabroach, and BDS, etc.WANSUI® annular cutters made of ... BDS, Ruko, drilling rig and other magnetic drill machine.Also applies to all types of vertical drilling ... lathe, etc.We also have Pilot Pin Annular Cutter for magnetic drill machine