Drillco 400N Series High-Speed Steel Nitro Heavy Duty Jobber Drill Bit, Black/Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degree Split Point, 1/2" Size (Pack of 6)
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<b>[Product Information]</b><br>
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<li>Heavy duty nitride surface treatment increases hardness for drilling stainless steel and other hard metals</li>
<li>Jobber length drill bit has a midrange drilling depth</li>
<li>High-speed steel (HSS) provides hardness for wear resistance</li>
<li>Black and gold oxide finish resists corrosion and increases the hardness of the drill bit for additional wear resistance</li>
<li>Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging</li>
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