The ECO kit can be used in numerous situations. It is a quick and economical solution to any type of thread repair, regardless of application. HELICOIL ECO kits contain all necessary tools and inserts and together by step by step instructions for use. HELICOIL inserts are made from high grade 18-8 helically wound stainless steel wire. Once installed the radial pressure of the insert holds it firmly in place. Due to the exact tolerances, the repaired thread will be stronger than the original. Supplied with a high quality HSS tap suitable for cutting most materials including aluminium, magnesium, cast iron and most machinable steels.
These spark plug specific kits include 5 x 1/2" reach and 5 x 3/4" reach inserts.