7 piece, blue granite, hammer drill, masonry bits, includes: (1) 1/8" x 2" x 3" bit, (2) 5/32" x 3" x 6" bits, (2) 3/16" x 4" x 6" bits, (1) 1/4" x 4" x 6" bit & (1) 3/8" x 4" x 6" bit, delivers fast impact drilling in concrete, stone & masonry, combining low voltage with high temperature brazing prevents carbide cutting edge from breaking out even when heat builds up during deep drilling, features straight shank drill bit, milled u-flutes with deep cut spirals & diamond ground carbide tip for precise starts in tile & hard stone, robust head design provides long service life, softened shank has aggressive gripping power ansi standard compliant.