[ fluted drill bit and round shank] adopt fluted chip design, these drills can speed up the drilling and chip removal process. Drill bits size:(Approx.). 5 200mm Extra Long Drill Bits. [Widely used]Suitable for various materials, such as for mold steel, spring steel, white steel, ordinary steel, aluminum, copper, wood, stainless steel (within 1-4mm), plastic and PVC.
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