The coiled threaded Inserts are mainly used for soft materials to tap holes efficiently. They are made from corrosion resistant materials and hence do not rust easily but stand and hold the material intact for a longer duration. They can be used to repair damaged holes in soft metals and protect the holes from stripping away from their positions. Tappex Thread Inserts – USA also provide a cover against wearing and tearing in these soft metals. They are available in various sizes and can be used according to the needs of the user. They are highly resistant and can withstand even 800 degrees Fahrenheit temperatures.