This Left Hand drill bit set is great for extracting broken or stripped screws, studs, bolts, and more. Bits are made of M2 High Speed Steel with a Titanium Nitride coating. NEIKO Left-Hand Drill-Bit Set is an essential kit for anyone. Ideal for automotive or home use, these high-speed drills remove broken fasteners, screws, bolts, and studs with ease. Each angle-tipped drill bit is constructed with a twist style and a 135-degree split point for accurate self-centering. Made for fast and efficient cutting speed, our bits prevent walking to clear chips and particles extra quickly. Each bit is made of high-speed steel with a durable titanium nitride coating for ultimate corrosion resistance. This heavy-duty material offers a high surface hardness to help penetrate tough materials and reduce friction between the bit and the workpiece. The left-handed bit design is perfect for reversible drills with screw extractors, making this kit ideal for home maintenance, auto repairs, and more. Our titanium drill-bit set is available with 5, 13, or 15 standard SAE twist drills. The 5-piece SAE set is made with M35 cobalt high-speed steel, and it includes the following sizes: 5/64", 7/64", 5/32", 1/4", and 19/64". The 13-piece SAE set is made with M2 high-speed steel, and it includes the following sizes: 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". The 15-piece SAE set is made with M2 high-speed steel, and it includes the following sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 1 5/16", 1", 1 1/16", 1 1/8", and 1 1/4". Each drill-bit set comes with a metal index case for easy transportation between job locations. Each tool has an assigned hole in a drill-bit holder with size index markings for quick organization and easy storage. 13 PC Left Hand Drill bit Set High Speed Steel M2 Long-Lasting Titanium Nitride Coating 135 Degree Split Point Design Penetrates 75% Faster Fractional Size: 1/16" To 1/4" By 1/64ths Includes Metal Index Storage Case Listing and template services provided by inkFrog