Perma-Coil™ 1/2" x 13 Stainles Steel Coarse Helical Inserts (208-108) by Thread Kits®. Helically coiled inserts are made from 304 (18-8) stainless steel that has been rolled to a carefully controlled diamond shape thread form. Designed to be slightly oversized in diameter, when installed into a STI (Screw Thread Insert) tapped hole, the insert expands outward with a spring-like action that securely grips the wall of the parent material providing a much stronger, permanent thread. Perma-Coil inserts and repair kits are designed to repair stripped threads in a variety of metals including aluminum, aluminum alloys, magnesium, cast iron and bronze.

Specifications:

Features:

• Expertly crafted from high-quality raw materials
• Proven to deliver the longest possible wear life
• Designed to perform under the toughest conditions
• Perfect solution for professionals and do-it-yourselfers