HSS annular cutter, one-touch shank, Inch Fully-ground process, superiorly-designed cut geometry,smooth cutting. HSS annular cutter, one-touch shank, Inch Characteristics: .Made from super touch high speed steel. HSS annular cutter, one-touch shank, Inch .Fully-ground process, superiorly-designed cut geometry, smooth cutting..One-touch shank, suitable for all types of magdrill like Nitto Hougen, ...