This is standard flexible thermoplastic UL and CGA approved propane supply hose. Commonly found between the LP tank and regulator. Propane Hose 1/4 Inch Inside Diameter High Pressure Hose, 200,000 BTU Capacity, Female QCC (Quick Check Connector) Type 1 Connection x 1/4 Inch Male Inverted Flare. LP Pigtail is 12” long.