General description 13 Piece Left Handed Drill Bit Set features M2 high-speed steel bits with a titanium nitride coating for enhanced durability. The split-point and 135-degree twist design increase cutting speed, self-center, and prevent walking while efficiently removing chips and particles. This special left-hand design can also be used with screw extractors to remove broken fasteners. Technical specifications Material: M2 high-speed steel Coating: Titanium nitride Bit sizes included: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, and 1/4 inch Compatibility and accessories Can be attached to reversible drills Includes a metal case for easy storage Usage Ideal for removing screws, bolts, and studs around the home, garage, or job site.