Biltek HVAC R12 R22 R502 A/C Diagnostic Manifold Gauge Kit w/Quick Coupler High/Low Manifold Gauges A/C Tester Refrigerant Gas Service Diagnostic Kit with Quick Couplers Complete Diagnostic and Service Gauge Set for use on Air Conditioning Systems (Automotive / Home) Refrigerant Charging Hose 2500PSI Burst 500PSI Max W.P. each hose is approx. 5ft ( 60 inches) with 1/4" SAE fitting Brand: Biltek | 10 Amps High Rate Charging Ideal for R12, R22 & R502 refrigerants