ARKSEN Manifold Gauge Set for R134a A/C 5FT Color Hose Refrigerant Charging Auto Service w/Case Burst Pressure: 3000PSI / Max Working Pressure: 600PSI Blue Gauge (Low): 2-1/2 Inch Diameter, 0-120 PSI With 0-40 VAC Red Gauge (High): 2-1/2 Inch Diameter, 0-500 PSI Red & Blue 5Ft Long Charging Hose (1/4 Inch FFL X 72 Inch With Knurled Fittings) Yellow 5Ft Long Charging Hose (1/4 Inch ACME X 72 Inch With Auto Shut-Off Fittings)