Sizes Included: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16" And 1/2"Shank: StraightTungsten Carbide And Cobalt TipMulti-Purpose Drill Bit Designed To Work On Concrete, Masonry, Brick, Granite, Marble, Ceramic Tiles, Porcelain, Glass, Wood, Plastic, Cast Metals, Hardened Steel And MoreChrome Vanadium Steel Shank For Enormous StrengthIdeal For Cordless Drills, Corded Drills And Drill Presses