The Robinair 1/4 Flare 2 Valve Aluminum Manifold Is ideal for any gas. Constructed from solid aluminum for added durability needed for repeated, tough daily use. Contoured easy to grip hand wheels are color coded for quick and easy identification, 1/4 Flare fittings and a sight glass for liquid flow for charging or recovery, 60" ¼" Enviro-Guard hoses with 45° in-line compact ball valves, and the 2-1/2" gauges have R22/404A/410A pressure temperature scales on the face of each gauge.