Mr. Heater 15-inch Propane Hose Assembly with Acme Nut and a 1/4&#39;&#39; inverted Male flare Acme Nut x .25 inch Inverted Male Flare Connects to propane tank and auto change-over dual usage regulator Hose material stretch tested to 400 psi Hose material pressure tested to 600 psi Solid brass fittings 15"' in length Durable rubber hose Flexible 210 psi capacity Useful in BBQs RVs and campers