Zovfam Metric Thread Repair Kit, 304 Stainless Steel Wire Inserts, 210 Pcs | 304 Stainless Steel Helical Inserts for Automotive & Machinery. M3-M12 2D Sizes for Rebuilding Stripped Internal Threads

Restores Stripped Metric Threads - These helically coiled wire inserts are designed to rebuild damaged internal threads in metal. Once installed, they create a reliable new connection for matching metric fasteners in engine blocks or machinery

Prevents Soft Metal Stripping - Featuring a precision diamond-shaped cross-section, these inserts evenly distribute stress load across the thread. This design helps increase thread strength in softer metals like aluminum or magnesium castings

Premium 304 Stainless Steel - Manufactured for durability and long service life. The high-hardness 304 stainless steel construction provides excellent heat and corrosion resistance for demanding automotive and industrial environments

210-Piece Organized Assortment - Keep commonly used sizes neatly sorted in one clear case. Includes 40pcs each of M3/ M4/ M5; 30pcs of M6/ M8; 20pcs M10; and 10pcs M12 (all 2D length), with separate compartments for quick identification

Installation Note - This kit contains replacement wire thread inserts only. Select the exact diameter and pitch for your project, and ensure you have the matching drilling, tapping, and installation tools ready before use (tools not included)