The 450mm Easy-Fit Handwheel Propane Gas Pigtail. Designed for seamless propane cylinder changes, this high-quality gas pigtail features NR POL x W20 fittings and a user-friendly handwheel mechanism.  Effortless Installation: The innovative handwheel design allows for quick and tool-free connection, making cylinder changes a breeze. Quick Cylinder Replacement: Easily replace used or empty gas cylinders by simply unscrewing and tightening the handwheel, no spanners required. Enhanced Excess Flow Protection: Features a built-in excess flow valve that automatically restricts the flow of gas if it exceeds safe levels, preventing accidents and ensuring operational safety. Robust Non-Return Functionality: Equipped with a non-return valve to preve