DeWalt DW5455 Rock Carbide SDS Plus Hammer Drill Bit, 3/4 Inch x 10 Inch x 12 InchDeWalt 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. Highlights: Material: Carbide Tipped Drill Size: 3 4 inch Overall Length: 12 inch Usable Length: 10 inch Style: SDS Plus Dewalt carbide tip design maximizes carbide surface contact for longer bit life Increased steel