Safe and airtight connection between the propane hose or regulator and the gas grill cylinder valve, reducing leaks and ensuring dependable operation. Quick, tool connection that is easy to grasp, install, and connect for faster setup. Safe to connect and disconnect without shutting down the entire system, making maintenance and changes simpler. POL valve to QCC1 or Type 1: Brass fittings convert an LP tank POL valve to fit all QCC1 or Type 1 hoses and regulators for broad compatibility. Durable brass construction delivers corrosion resistance and long service life in outdoor grilling environments; compact, easy to handle design. Use scenarios Replacing a damaged hose on a grill that uses a QCC1 hose with a POL cylinder, enabling a secure, airtight connection. Camping, tailgating, or outdoor cooking where a POL cylinder must connect to a Type 1 hose or regulator. RV or outdoor kitchen setups requiring interchangeable POLtoQCC1/Type 1 connections for flexible fuel setup.