QDD-LP Gas Quick-Connect Adapter Kit, 1/2 inch fittings Wide applications: professional 1/2 inch gas quick-connect adapter kit designed for propane systems. Suitable for grills, patio heaters, generators and other gas system devices. What’s included: four adapters - 1 x 1/2 in female pipe x 1/2 in female quick-connect adapter - 1 x 1/2 in male NPT x 1/2 in male quick-connect adapter - 1 x 1/2 in male quick-connect x 1/2 in female pipe thread adapter - 1 x 1/2 in male NPT x 1/2 in male NPT adapter Function and compatibility: enables quick connect and disconnect between common 1/2 in pipe thread and NPT fittings and quick-connect ends. Designed to fit 1/2 in gas lines and compatible with appliances that use standard 1/2 in fittings. Practical use scenarios - Connect a propane grill to an external gas supply or alternate hose setup for easy swapping. - Hook up a patio heater or portable generator and switch between lines quickly without tools. - Adapt between different 1/2 in NPT and pipe thread fittings across gas appliances and hoses. Key attributes at a glance: fast connect/disconnect, 1/2 in sizing, includes multiple adapter configurations for flexible gas line connections. Material not specified by the manufacturer. For safe use, verify proper sealing and leak testing after installation.