Product description Features:Easy to install: The 18 inch stainless steel braided RV propane hoses are convenient to install and no other tools needed, which is easy and taking little time. They can provide secure and tight connection of standard two-stage regulator to a QCC1 5lb to 40lb LP gas tank, suitable for BBQ grill, RV, camping, travel trailer, outdoor cooking and other needs. Durable to use: The braided RV pigtail hose connectors come with tank gauge level indicators that designed with dials with 3 different colors, which can help you read and monitor the gas levels clearly and easily as well as detect the dangerous leaks. The propane hoses are sturdy and durable, not easy to break or abrade when exposed to different weather, suitable for long-term use. Specification: Hose length: 18 inches Material:stainless steel Notice: 1/4 inch Male inverted flare is not 1/4 inch Male NPT. Please check your connector before you order. Checks for leaks on propane appliances before use it, ensuring your safety. The gauge will not read levels immediately, it begins working when propane is flowing. Note: The measurement allowed error is +/- 1-3cm. About this item 1/4" Inverted Male Flare 7/16-24UNF Male Thread (NOT 1/4" NPT) Inlet Regulator to a 20lb-40lb LP tanks.(NOT 1/4'' Male NPT) Wirh Gauge Length Stainless steel braided hose is 18inches of each Connect your Standard Two-Stage Regulator to a QCC1 5lb to 40lb LP gas tank with Gauge can check the gas volume easily , The pigtail hose can also be used to connect to an installed 4-Port Tee as an auxiliary propane supply The RV Pigtail Hose with propane tank gauge can be detects dangerous leaks ,Flexible stainless steel Braided hose more durable High Pressure Hose Rated,Perfects for BBQ, RV and camping needs or having an outdoor