ISR Performance -8AN Braided Black Nylon Hose - (Per Foot) The ISR Performance black braided nylon hose is lightweight, durable, and can be used with oil, water, fuel, and coolant. These lines help clean up the appearance of any engine bay, and are a great upgrade for your old factory lines which can become brittle and crack over time. ** All ISR Performance Products are Designed for Off Road Use Only **