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"Diagnose refrigeration systems troubles with ease and save time by watching both gauges at once. The complete diagnostic and service gauge set includes R22, R410A, R407C and R134a readings. Three color coded hoses each measure 60 inches long and each hose has a 1/4"" fitting on both ends. The Freon charging hoses have a maximum working pressure of 600PSI and a burst pressure of 3000PSI. Also included are a pair of R410A high and low quick couplers (in blue and red) to avoid dangerous refrigerant mix-ups. There's also an acme adapter for R410A (1/4"" male to 1/2"" female). The whole set is mounted on a brass body so it is durable and dependable. Specifications: Hose Length: 60 inches Hose Fitting: 1/4"" Burst Pressure: 3000 PSI Maximum Working Pressure: 600 PSI Acme adapter fitting: 1/2"" Female to 1/4"" Male Working Temperature: -30~+110℃ Hose density:1.35g/cm3 Hose hardness:70 ± 5Grade Package Include: 1 x Brass Manifold Gauge Set 3 x 60'' Freon Charging Hose 2 xQuick Coupler (High & Low)"