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. High-quality -MO Steel: stripped screw extractor made of heat-treated and high-quality steel. Tough and not easily damaged. Left-hand spiral design offers extra gripping power and faster threading. 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. 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. Portable & Neatly Organized: Heavy-duty blow-molded case lets all the screw extractors stay organized and take your set ., Weight: 4.1005980732 Pounds, Manufacturer: Zwfjcmsa