DeWALT DW5424 Hammer Drill Bit, 5/16 in Dia, 6 in OAL, Helix Flute, 4-Flute, 5/16 in Dia Shank, SDS Plus Shank

Sets up to 25% more anchors than standard masonry bits, DeWALT® SDS Plus masonry drill bits power through masonry, concrete and more with a carbide tip that maximizes bit life. An elongated 4-flute helix helps to increase material removal and 3 flats on the shank helps to prevent slippage.