Back Home / Assortment & Kits / Fasteners / THREAD REPAIR KIT-UNC, H-COIL INSERTS,TAPS,TOOLS 1/4 – 1/2 THREAD REPAIR KIT-UNC, H-COIL INSERTS,TAPS,TOOLS 1/4 – 1/2 SKU: HCICA Categories: Assortment & Kits, Fasteners Helically coiled inserts. UNC coarse thread. Includes 30 inserts, 5 taps & 5 installation tools. Sizes include 1/4″-20 through 1/2″-13. In a plastic carrying case. Case Quantity: 1 Log In For Pricing