3 Piece, Hammer Drill, Bit Set, Includes Hammer Drill Bits Sized: 1/4" x 4" x 6", 3/16" x 4" x 6" & 5/32" x 4" x 6", Fast Drilling, Faster Drilling Reinforced Flute Geometry Increases Bit Stability, Longer Life Carbide Tips Extend Performance In Masonry Applications, Convenience Delivers Superior Quality In A Select Range Of Bits.