Model：R22 R12 R502        
Product details：        
·No-flutter gauge design    
·Easy to read color coded dials        
·Durable metal casing
·Front calibration access port        
·High impact pop-in lexan lens
·1/8" NPT brass connection   
Our major products include: condenser, manifold gauge, compressor, axial fan, commercial refrigerator and freezer, valves, pneumatic fittings, auto plastic fastener, clamp and nylon quick connect, etc.