YATO brand step drill YT-44742 Designed for drilling in high-grade stainless, structural and cold-rolled steel, nonferrous metals, steel sheets, plastics. • made of HSS 4241 high-speed steel, coated with titanium nitride to increase the life of the drill bits• drilled hole edges remain clean and burr-free• automatic centering on rounded and slippery surfaces• rapid heat dissipation when drilling in hard materials• 2 spiral flutes wior efficiently dissipate the excavated material• shank with 3 flat surfaces gives you the ability to transfer maximum torque
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