A Leading Manufacture and Exporter of HELICAL COIL Screw Thread Inserts in Korea.Our Products are as under ;1. Helical Coil Screw thread inserts ( IN - COIL ). Free Running . Locking The size range are Metric Coarse and fine from M2and UNC, UNF 2. Helical Coil Screw Thred Insert TapThis is also Metric Coarse and find, UNC, UNF are available.3. Installation Tool for Helical Coil Screw Thread Inserts.4. Zinc Plated Helical Coil InsertsMore easy to find after installed. BODY { background-color: #ffffff;} BODY, TD, TH { color: black; font-family: ????; font-size: 12px; } TD { border: 0px} P { margin: 0px;