Irwin Industrial Tools 10225 Unibit General Purpose Step Drill Bit Set, 4-Piece
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<b>[Product Information]</b><br>
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<li>Single-flute cutting edges for greater control through steps</li>
<li>3-flatted shanks prevents slipping in drill chuck</li>
<li>Non-skid self-starting tips eliminate skidding and the need for center punching</li>
<li>Sizes clearly laser-etched to make precise drilling easy</li>
<li>Set includes HSS #1, 2, 4, and 21 size step drills</li>
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