Dormer E651 High-Speed Steel Combined Drill and Tap, Black Oxide Finish, Round Shank With Square End, Modified Bottoming Chamfer, 1/2"-13 Thread Size
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<b>[Product Information]</b><br>
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<li>Combination drill and tap creates holes and cuts threads in one operation for efficient tooling</li>
<li>Spiral flutes pull chips back from the tip of the tool and out of the hole to prevent clogging</li>
<li>For creating and threading through holes</li>
<li>Black oxide finish improves lubricity, resists corrosion, and helps prevent buildup</li>
<li>Modified bottoming chamfer has additional length to reduce chip load, add tool life, and permit higher tapping speeds</li>
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