【HIGH PERFORMANCE BOLT EXTRACTORS】: Removal of broken or damaged screws, bolts and fasteners without any effort. The extractor can easily and quickly remove broken or rusted screws, bolts and studs 【PRACTICAL BROKEN SCREW EXTRACTOR】: Suitable for removing all available terms such as bolts, screws and studs whose diameter varies from 4 mm to 25 mm. Simple and reliable in general applications 【PORTABLE SCREW DRILL EXTRACTOR KIT】: Comes in a storage box with 12 pieces: 6 pieces for the screw extractors and another 6 pieces for the drills. Very convenient and practical to set up all these tools and carry them anywhere 【HIGH QUALITY SCREW EXTRACTOR SET】This broken screw extractor kit is made of high quality material, which is durable enough for long term use. These extractors will remove most types of damaged, stripped, rusted, broken or stuck screws