Yellow Jacket 19173 5/16 Female Quick Couplers x 1/4 Male Flare

works as advertised

didnt have to use them

Perfect for the job thank you

This coupler worked perfectly and the mini-split is running great!

The adapter was needed for my gauges to work with the mini split system installed.

Very good

Needed to hook up manifold gauges to most mini split service ports. Good quality. The only thing that could make it better is if it had a shutoff valve.

Shaped to allow hookup to my mini split unit, solid build, work great

This adapter from YellowJacket is a must have for mini-split work. It works better than any other brand I have used. There is alot of nonsense in some of the reviews. 1. This has nothing to do with being able to use an automotive vacuum pump, nor any bearing on your guage set. Most of you will know this, but thought to throw it out there as some of the reviewing folks above probably have a service call to a pro in their future. The bend is nice as most mini-splits have the service port near the bottom and it is hard to get straight tools on. The cheap adapters leak, and the SupCo is hard to get on without loosing some gas. The large knurled surface on this one helps. I hook this up, then use an Appion tee for my probe, at that point can charge with a hose to my tank. I use my probes on mini splits to charge as you can monitor output air temp vs, suction line temp and vapor saturation. There is no conventional hi side, so it just takes some getting used to what you should see. The flare fittings on splits are the Achilles heel and you have to get them right or you will always be adding gas. The factory will always tell you to weight in at every service, but in the real world this is not possible. Use your PT chart and keep it from freezing, I have found 125PSIg to be right for me in the Texas heat, YMMV. Yellow Jacket professional quality, it just took forever to get here. Sorry for the long rant.

ALL A-OK.