DUSICHIN DUS-134 HVAC Refrigeration Charging Service Kit, Car AC Manifold Gauge Set R22 R502 Brass material manifold Max Working Pressure: 600PSI; Burst pressure: 3000PSI Hose Length: 3ft (each hose with 1/4" fitting on both end); Temperature Scale: Celsius Compatible with R22 & R502 refrigerants For car air conditioning systems 10 Amps rating high rate charging