Power through masonry, concrete, rock, and more with Dewalt hammer drill bits. Featuring rock carbide tips that maximize surface contact for extended bit life and a 4flute design that cleans debris while you work. 3 flats on the shank eliminate bit slippage. Length: 3" Usable Length: 2" | DEWALT 3/16" x 3" Drill Bit Premium Percussion DW5222