Dewalt DW5228 5/16 Inch X 6 Inch 4 Flute 2 Cutter Carbide Tip Hammer Drill Bit

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. 3 Flats On The Shank Eliminate Bit Slippage.