[PREMIUM MATERIAL]: This propane quick connect fittings are composed of Acme nut QCC1/type1 propane cylinder adapter, 3/8 inch male flare and 1/4 inch male quick connect disconnect plug, which adopt exact standards and quality construction, prone to support a long service life and performs well. [WIDE APPLICATION]: This rv propane regulator is used to connect standard American 5lb-40lb propane tank or appliances that have 1/4 inch male quick plug. Our regulator kit is widely fit for numerous low-pressure propane appliances like grilldes, fire pits, fireplaces, heaters, etc. [FUNCTION]: The propane gas grill regulator is only used on low pressure system, cannot work over 11"W.C(1/2 PSI), maxes out 77.000 Btu/hr, keeps the flow stable and at the appropriate level. [EASY TO USE]: No tools are required, installation can be completed in a minute. The quick connect hooks up a 1/4 inch quick plug on your propane hose from your grill and is easy to pull out when you do not want to use. [SAFETY]: Our propane regulator comes with overload protection to prevent air leakage. If there is a leak at the hose connection, the gas will be closed in the regulator part to prevent gas leakage problems, ensuring safe and secure connection. Although there is a protection function, it is better to close the main brake on the propane tank after use. a