Vulcan 202651OR Drill Bit, 5/16 in Dia, 6 in OAL, Percussion, Spiral Flute, 1/4 in Dia Shank, Straig

Negative carbide tip for rotary and percussion drilling. All sizes 3/16 in and larger have 3 flats on the shank so that the chuck gets a better grip on the bit. Wide flutes quickly move out debris and dust. For drilling brick, stone, concrete, ceramic and damp and dry masonry work.