Pagoda Shape HSS Triangle Shank Drill Bit Metal Steel Step Hole Cone Power Tools Made of high quality HSS, the titanium coating ensures extreme durability, reduces friction and heat. Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole The ladder of its unique structure, a bit can open a variety of specifications of aperture.you can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole. Cutting material: sheet iron plate, aluminum, wood, insulation boards, PVC plate thickness within 5mm.
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