Features:-It includes dual-color high and low pressure gauges for easily and safely testing your vehicle's air conditioning.-The dual meter uses a unique spring pressure display, which is clearly visible and reads data more accurately.-With heavy-duty hook to hang the meter securely, easy to keep it where you want it.-It includes 3 filling hoses, a quick connector for high-pressure connection (red), and a quick connector for low-pressure connection (blue) , easy to use.-All joints are made of copper, which is wear-resistant, corrosion-resistant, rust-resistant and durable.Specification:Adapter connection: 5/16”SAE to 1/4"SAEBurst pressure: 2500psiMaximum operating pressure: 500psiHose length: 60 inches (about 152cm)Hose color: red, blue and ye.