Never run out of fuel again! This 4 Foot LP Adapter Hose with Built-In Tank Gauge combines a traditional adapter hose with a tank gauge. This hose allows portable grills to connect to 20lb tanks. It also accurately measures the remaining gas in a standard 5 gallon tank. Once this hose is attached to a 20lb propane tank, you’ll be able to increase your grilling hours and consistently monitor the fuel level.