Dewalt DW5460 Rock Carbide SDS Plus Hammer Bit, 6" x 7/8"Set 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. Rock carbide SDS plus hammer bit Extreme durability Sets 25% more anchors Dewalt carbide tip design maximizes carbide surface contact for longer bit life Elongated four flute helix for faster material removal Increased steel prevents breakage. WARNING: Some dust created by power