DeWALT DW5249 Hammer Drill Bit, 1 in Dia, 12 in OAL, Percussion, Spiral Flute, 4-Flute, 1/2 in Dia Shank

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 4-flute design that cleans debris while you work. Three flats on the shank eliminate bit slippage.