... superiorly-designed cut geometry,smooth cutting. HSS annular cutter, one-touch shank, Inch Characteristics: .Made from super touch ... process, superiorly-designed cut geometry, smooth cutting..One-touch shank, suitable for all types of magdrill like Nitto Hougen, Jancy ... , Alfra, BDS, Ruko, Rotabroach; as well as radia drilling machine ...