General description This 6Pcs Headless Screw Extractor Set is designed to efficiently remove damaged or broken screws, making it an essential tool for auto repair, home decoration, and various DIY projects. The set includes a quick change chuck and five coin extractors, allowing for versatile applications in different scenarios. Technical specifications Includes 6 tools 1/4 inch quick change chuck 5 coin extractors with sizes: #1: 1/8-1/4 inch (M3-M6) #2: 1/4-5/16 inch (M6-M8) #3: 5/16-7/16 inch (M8-M11) #4: 7/16-9/16 inch (M11-M14) #5: 9/16-3/4 inch (M14-M19) Usage This screw extractor set is ideal for: Removing broken head screws Dealing with rusty screws Disassembling screws and nuts quickly and effectively Convenient use in auto repair, home decoration, and handicraft production