Air Horn Valve Lanyard Pull Mechanical Air Valve; Brass; Lanyard Valve; Inlet For 1/4 in. OD Tubing; Includes Heavy Duty Steel Pull Cable; FEATURES: Honk Your Horn Just Like A Big Rig Outlet Of Valve Threads Directly To Bottom Of Roof Mount Horns Valve Threads Directly In To The Bottom Of Roof Mount Horns Includes A Heavy Duty Steel Pull Cable Inlet For 0.25 in. O.D. Tubing All brass hand pull lanyard valve for roof-mount horns. Honk your horn just like a bug rig. The outlet of the valve threads directly in to the bottom of roof mount horns. Includes a heavy duty steel pull cable. Kleinn automotive air horns offers complete air horn kits, train horns, roof mount truck horns, air systems kit accessories and off road lift kits.