HeliCoil Inserts. Eliminate thread wear, corrosion, galling, seizing and rust.

The HeliCoil 5521-8 Coarse Thread Repair Kit is a set of 8 inserts designed for repairing 1/2-13 inch threads in SAE measurement. Manufactured in the United States by Helicoil, this product comes with a 1-year warranty and is a reliable solution for automotive and industrial threading needs. The kit provides high-quality components to ensure a secure and durable repair, making it a valuable addition to any tool collection for professionals and DIY enthusiasts alike.