The Crushproof convoluted design has been specifically formulated to handle 600°F temperatures. The hose, which does not contain a wire helix, returns back to its' original shape if "crushed" by any vehicles or other machinery. This hose is ideal for application where the hose may be left on the floor or used in underground applications. One end of the Flarelock Hose is flared so two pieces of hose can be connected. The hose is designed so it has a male and female end on each hose. Although a fan is recommended when using hose longer the 10� long. This product should always be used with the proper tailpipe adapter for your application.