Tackle any drilling task with the 19 piece drill bit setr r r hss titanium 1 15 2 25 3 35 4 45 5 55 6 65 and 7mmr r r tct masonry 4 5 6 7 8 and 9mmr r r r crafted in tip tungsten carbide for a sturdy finishr built with metal coated twist pieces suitable for drilling through most materialsr set in a plastic case to ensure the set lastsr a great accompaniment to power drills needing a new setr sa