High-quality CR-MO Steel: stripped screw extractor made of heat-treated and high-quality chromium molybdenum steel. Tough and not easily . Left-hand spiral design offers extra gripping power and faster threading. Easy to Use: Easy out screw extractor set suitable for both power tools and hand tools,high density spiral design helps faster removing broken screws, bolts, nuts, studs, fittings, threaded pipes and pins. Multiple Size To Meet All Your Need: 25pcs bolt extractor kit including:1In-7/8In ,1In-27/32In,1In-13/16In,7/8In-25/32In,7/8In-3/4In,7/8In-23/32In, 7/8'-11/16In,7/8In-21/32In,3/4In-5/8In,3/4In-19/32In,3/4In-9/16In,3/4In-17/32In,5/8In-1/2In,5/8In-15/32In,5/8In-7/16In,1/2In-13/32In,1/2In-3/8In,1/2In-11/32In,1/2In-5/16In,1/2In-9/32In,1/2In-1/4In,1/2In-7/32In,1/2In-3/16In,1/2In-5/32In,1/2In-1/8In. High-visibility laser-etched size for quick identification. Stamping Size: All the size is engraved on the screw extractor socket for easy identification, chamfered bit ensures a smooth fit onto fasteners. Whether it's for car maintenance or daily use, it can provide you with great convenience. Portable & Neatly Organized: Heavy-duty blow-molded case lets all the screw extractors stay organized and take your set on the go. Note:Due to different production batches, the color may vary, which does not affect the use. Colour:As Shown Material:Metal Package Contents: 25 * Bolt Extractor