Description:CNC straight shank centering drill bits set positioning tool comes in metal index case for easy storageBits made of high speed M2 steel with a titanium nitride coat for added durabilitySpecial left hand design can also be used with screw extractors to remove broken fastenersAttachable to reversible drills to remove screws, bolts, and studs around the house, garage, or on the job siteSet includes: 1/16 5/64 3/32 7/64 1/8 9/64 5/32 11/64 3/16 13/64 7/32 15/64 1/4 inch bitsSpecification:Material: HSSColor: GoldenPackage Includes:13 Pieces Drill Bits