Heli-Coil has the most effective and universally accepted method of thread repair. Heli-Coil inserts quickly and permanently restores stripped, worn or damaged threads to their original size and condition. Inserts work in any part of material; aluminum, magnesium, cast iron, bronze, etc. The use of light weight materials in fuel efficient cars means more thread damage..there is a Heli-Coil insert to repair virtually every application. Restore parts that otherwise would have to be scrapped.Features:Metric Fine Thread Repair Kit – M14x1.5 x 21.0mmTap Part No. – 4976-14Installation Tool Part No. – 4973-14Tool Type – 3Insert Package Part No. – R3745-14Drill Size – 9/16″ (Drill bit not included.)6 Inserts Per KitHel5544-14 Click Here. Double your traffic. Get Vendio Gallery – Now FREE!