Easily converts your gas grill or other portable LPG appliances from small, disposable cylinders to larger, refillable cylinders. Leak-tested handwheel POL fitting at one end screws into propane tank; high-pressure appliance valve fitting at the other screws directly into the appliances built-in regulator. California Proposition 65 WARNINGBrass nozzles, quick connects, sprayer nozzles, hose fittings connectors, clamps, and couplings contain lead, a chemical that is known to the state of California to cause cancer, birth defects and other reproductive harm.