Fast impact drilling in concrete, stone and masonry. Diamond ground carbide tip for precise starts in tile and hard stone. Milled U-flutes with deep-cut spiral for fast dust removal. Robust head has a long service life and beneficial in impact applications. Softened shank provides aggressive gripping power. Includes: 1/8-in x 2-in x 3-in Hammer Drill Bit, (2) 5/32-in x 3-in x 6-in Hammer Drill Bits, (2) 3/16-in x 4-in x 6-in Hammer Drill Bits, 1/4-in x 4-in x 6-in Hammer Drill Bit, 3/8-in x 4-in x 6-in Hammer Drill Bit, Storage Case.