Solid Brass Connection - 100% solid brass construction ensures a sturdy, durable, secure air-tight connection which withstands weather, scratching, denting and corroding. Gas Level Indicator - Our color dial can clearly show how much gas is left in the propane tank without lifting heavy tanks. And with easy to read glow in the dark dial, your propane meter will also display your propane levels even in the dark. Leak Detector - If the gauge detects gas leak, it will restrict the flow to ensure your physical and mental safety. Easy to Install - this propane gauge can be easily connected to propane tank without any complicated assembly, tools or pipe thread needed. We also supply 1pc gas line tape, providing a highly resistant seal on pipe threads for all types of service. Univeral Fit - It works with 5-40lb propane tanks and a QCC1 / type1 connection, like propane adapter or propane regulator with hose. Great for using gas grill, heater, smoker, camp stove, lantern, tabletop grill, fire pit table, turkey fryer and more propane appliances. Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you