DEWALT Masonry Drill Bit Set, Percussion, Concrete & Block, 7-Piece (DW5207)

2 cutter carbide tip of masonry drill bit set maximizes carbide surface contact for longer bit life.
Four flute design cleans debris out for fast, efficient drilling
Three flats on shank eliminate bit slipping in chuck (except DW5232, DW5233, DW5237, DW5238)
Rock carbide tip maximizes carbide surface contact for longer bit life
Four-flute design cleans debris out for fast, efficient drilling
Three flats on shank eliminate bit slipping in chuck
For use with electric or cordless hammerdrills
Ideal for drilling holes in brick, block, concrete, and masonry