Team FastEddy high heat permanent red thread locker comes in a convenient large 10 mL bottle with a screw on top. Red high heat thread lock should be used on any metal to metal connection that involves heat such as your exhaust bolts or any other bolt on your engine. This is the highest quality thread lock available on the market today. Make sure to place it in your shopping cart before you forget. Don't forget to check out our blue removable thread locker as well.