DeWalt® DW5443 - 9/16" x 12" 2 Cutter Carbide Drill Bits, SDS+ Shank, Rock Carbide™ Tip, 4 Flute Design, 10" Usable Length

SDS Plus 2 Cutter Drill Bits have a strong tapered core to help resist flute breaks, especially when drilling deep holes. For optimal drilling speeds, the two-stage flute design features a variable helix pattern that quickly moves debris away from the contact zone. Plus, the two sharp, carbide-cutting edges deliver clean, round holes for secure anchor installation.