DEWALT DW1646 5-1/2-Inch Selfeed Bit Extension
The DEWALT DW1646 5-1/2" Self-Feed Bit Extension features an aggressive spur which provides fast material penetration. It's optimized cutting geometry provides longer bit life, with an open tooth design that allows for more resharpenings. The 7/16" Ball groove shank allows for quick change applications. Commonly used by plumbers drilling rough holes in wood for running pipe.
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