Suitable for general hand drill, impact drill, bench drill. Threaded design, high hardness, cutting fast, smooth wall after drilling. It is a practical, in a variety of wood drill bit for drilling through-hole model relates. It consists of a head (tip section), drill body (edge screw part) and shank (holding portion) composition. Reasonable structure design, smooth brisk drilling, high efficiency, after the drill hole wall is flat and smooth chip evacuation.
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