Viair 92837 1/4" Male NPT to 1/4" Compression Fitting for 1/4" Air Line 1/4 Male, NPT (Nickel Plated) to 1/4 compression fitting. For 1/4 airlines. Used to connect an air line to your onboard air system. Please note: Use thread sealant for proper installation. Teflon tape is not recommended. One Year Manufacturer's defect warranty through manufacturer with receipt. Air tank should be used with a drain cock and pressure release valve.