Improve your rig with the chrome air horn valve set with stand which provides a durable, polished way to control the air flow to a train or air horn on heavy?duty trucks. These assemblies typically include a floor?mount stand with brass compression fittings and are designed for use with 1/2?inch outside diameter and 3/8?inch inside diameter air lines (not included) to match typical horn systems. Sold individually rather than as OEM parts, they come with a warranty against defects in materials and workmanship from the date of purchase, though special?order products generally cannot be canceled or returned once ordered. The chrome finish on these valve sets helps resist corrosion and adds a custom look to your cab or chassis area while allowing you to adjust horn air flow with more control than a simple lever alone.