The Bad Dog Multipurpose Drill Bit will put a hole in material ranging from a hardened steel file to porcelain tile to almost everything in between. The tip is a revolutionary blend of carbide, titanium, and cobalt that's ours alone. Tougher than carbide, Bad Dog Multi-Purpose Drill Bits hold an edge longer than its cobalt cousins. The shank is made from armored steel that flexes without bending or breaking. Tip and shank are brazed together at over 2,000 degrees to create a package that is perfect for all drilling needs. Point these drill bits at a material and they will put a hole in it. Drill through concrete and rebar with the same bit. Drill through porcelain tile and into the wood subfloor with the same bit. They are even great for drilling out hardened steel taps. The shanks have quick-connect hex ends so they won't slip and can be used in impact guns.Kit includes: Hex Shank 3/32, 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16,15/32,1/2, Metal Index