DEWALT DW5446B10 Hammer Drill Bit, 5/8 in Dia, 8 in OAL, Helix Flute, 4-Flute, SDS Plus Shank

SDS Plus two 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.