The Robinair 45111 R134A Refrigerant Brass Manifold Gauge set features R12/R134a gauges, PSI, and °F Temp scales on the face solid brass construction with easy-to-grip handles. Includes three 72" EnviroGuard low permeation color-coded hoses and manual service couplers. ½" ACME bottom ports and rear ½" ACME fittings for holding Hoses. Face Seal Valves Give a tight seal, less wear and improved flow. Heavy brass construction make this a life time tool.