Useful to convert bbq and other propane portable to use the RV's onboard Quick Connect line. Coupling fitting for connecting two tubes with the same diameter Flared tube connection on one side and a female NPT connection on the other. Flared tube connection on one side and a female NPT connection on the other. Resists mechanical pullout for a more secure connection. Male flare 45° by Female NPT adapter 3/8" x 3/4" Consumer Note: It is recommended for the installation to be performed by a qualified person or licensed contractor, plumber, or gas-fitter technician. Use pipe thread sealant between all connectors for proper seal and leak test all connections prior to use as a safety measure. Not intended for Potable Drinking Water Use or Human Consumption Applications