MSD-HEX-SET is the perfect kit for the electrical, maintenance, construction, and auto industries. Popular applications include drilling junction boxes, metal studs, electrical appliances, lighting fixtures, pvc, plexiglass and auto body repair. Champion cutting tool's msd-hex step drill bits outperform others on the market, drilling 65% more holes than the competition. The convenient case comes with the three most popular sizes of impact ready step drill bits. The 1/4" hex shank is great for tool use in impact driver or cordless power drill. Titanium nitride coating and unique two flute design guarantee longer tool life and excellent performance.