MOUNTAIN 8200 R-12 to R-134a Conversion Manual Connect Coupler Set

Take an old set of R22 gauges and screw these on and have a set of A/C gauges that can work with both types of systems. Love being able to clip them onto the service ports like an air line and then open the valves with the adapters. This means I can tap into the system whenever I want to and not have to worry about high side pressures being too strong to force a cheapo line onto, as well as removing is just as easy. I won't use another set of gauges without having this kind of adapter on it.

Completely not what I wanted. I've had several different styles of couplers and always have problems with leaks at any threaded junctions that are part of the coupler, especially under vacuum. The pictures on this product at time of purchase showed a one piece body with integral male threads. I got a standard set of cheap couplers whose threaded connections included male-to-male couplers meaning there's a threaded junction for a potential leak. no better quality than the couplers I already have. Same as other cheap couplers that would cost half the price. Save some money.

Work great