This heavy-duty 1/2" valve kit comes with all the parts you need to upgrade your Shocker 4 horns to the 1/2" line. Once installed, your horns will be even louder! Using the included 1/2" feed line to the horns provides 4 times as much air ensuring maximum volume at all pressures. The package comes with P.T.C. fittings. Think of them like Chinese finger-traps: you simply push the airline in and the fitting holds on. It really couldn't be easier!
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