Bosch Bulldog HC2084 Hammer Drill Bit, 1/2 in Dia, 12 in OAL, Optimized Flute, 4-Flute, 25/64 in Dia Shank

Carbide tipped for long life in tough applications. Centric tip ensures quick starts in concrete. Wear mark alerts user when tip wears beyond ANSI specification. Bit runs cooler thanks to improved flute design.