The 10PC Phillips Titanium Coated, Low Profile, Dual Drive Bit Set features a range of sizes, allowing users to fasten or unfasten a variety of common Phillips screws. The bits are made from S2 Tool Steel and one of the only sets in the market that feature a titanium coating for added strength and wear resistance. The low-profile dual-drive design allows for use with a ratchet or 11 MM wrench.