Guaranteed to set up to 25 percent 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. Dewalt carbide tip design maximizes carbide surface contact for longer bit lifeElongated four flute helix for faster material removalOptimized core diameter maximizes hammer energy for greater impact power1/2 in. size6 in. length