zvd 6 piece 90 cutter set hss cutter set, titanium coated 6.3 20.5 mm bur taper bur set

universal sized drill heads are compatible with cordless screwdrivers and common drills, including pedestal drills automatic brass center drill is suitable for the machining on metallic and non metallic materials, e.g. carbon steel, sheet steel, iron, aluminum, insulation, pvc, wood soft, hard , pla