Irwin Tools 1882786  SPEEDBOR Countersink Wood Drill Bit, Number-4 Replacement Bit
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<b>[Product Information]</b><br>
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<li>Tapered drill with widened flutes for drilling fast, clean pilot holes and ensures tight fit for screws</li>
<li>Adjustable four-cutter counter bore cuts and clears chips quicker for fast, smooth countersinking</li>
<li>Counter bore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth</li>
<li>1/4" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drills</li>
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