The 14-Piece Cobalt HSS Screw Extractor and Left Hand Drill Bits Set is a versatile and durable tool set designed for various applications. Made from high-quality cobalt material, these screw extractors have a 135-degree cutting angle and a spiral flute type for easy and efficient extraction. The set includes 14 pieces with a minimum bore diameter of 0.13 inches, suitable for removing screws from alloy steel surfaces. The left-hand drill bits in the set have a straight shank and a taper point style, making them a valuable addition to any DIY or professional tool collection. With a manufacturer’s warranty, this set provides reliable performance for multiple uses.