APPLICATION: 1/2" ID CRIMPED HOSE FOR LOW PRESSURE PROPANE VAPOR SERVICELOW PRESSURE NATURAL GAS VAPOR SERVICELOW PRESSURE AIR GENERAL USE CHOOSE THE LENGTH YOU NEED (SOLD BY THE INCH, 72" = 6FT)IF YOU NEED A CUSTOM LENGTH, LONGER HOSE OR CUSTOM FITTINGS MESSAGE US AND WE WILL LIST IT CONNECTION A: 1/2" MALE NPT PIPE THREAD CONNECTION B: 1/2" MALE NPT PIPE THREAD BOTH CONNECTIONS COME WITH A FLARE FITTING FOR EASY INSTALLATION FREE SHIPPING TO THE USA Feel free to ask us about conversion kits for almost anything including trucks, cars, generators, tractors, boats, motorcycles, RVs etc. We can build a kit to convert almost any engine! WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the state of California to cause cancer. www.P65Warnings.ca.gov. WARNING: These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm. www.P65Warnings.ca.gov.