DEI Titanium 4in Knit Exhaust Sleeve - 12inTitanium Knitted sleeves are available in different precut lengths and by the foot sizes. They have a maximum temperature rating of 1800F with a continuous rating of 1382F. Perfect for larger exhaust pipes as they can expand up to 1. 5 times normal diameter allowing to install over flanges and sensor threads. You can cut to length and simply roll the ends. Protect components and keep heat from transferring into the cabins. Titanium Knit Sleeve, 12 in.