Installs between LPG cylinder and regulator or pigtail hose. Solid-brass male POL cylinder fitting and female POL receptacle block. Low-profile, stainless steel gauge reads to 300psi. Meets ABYC leak-test standard. 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.