The practical kit Contains all the tools for thread repairs, including spiral exercises, screw touch, a key and rupture tool for comfortable thread restoration. quality Made of stainless steel to guarantee durable repairs of persistent threads. Fast thread conversion Easily switch between inch and mm thread elements with the cover for efficient repairs. Reliable internal thread Stainless steel thread inserts sized M9X1.25 provide stable, reliable performance for quickly damaged internal threads. Use scenarios Automotive and mechanical repairs: restore damaged or stripped threads in engine components, housings, or brackets by using the stainless steel inserts and multitool package for quick restoration. Furniture and metalwork maintenance: worn or damaged threaded holes in metal frames, brackets, or supports to regain secure fastening. DIY and workshop projects: convenient size conversion between inch and metric threads and reliable internal thread for general and retrofitting in hobbyist or professional settings.