Achieve more precise drilling with the 3/4 in. x 3 in. x 6 in. Rotary Percussion Drill Bit. With a double-ground, extra-deep flute, this bit removes debris quickly for increased visibility and durability. The copper braze material adds high heat resistance and a chrome-vanadium spring steel shaft extends the overall lifetime of the bit. It is made for hammer drills with a 3-jaw or Jacobs chuck.