Quick Coupler,1/4 In Mx5/16 In F,45 Deg 19173-1 Each

This adapter will allow the use of an automotive grade vacuum pump on an R410A mini split air conditioner, which is what most of the modern mini splits use. Like all Yellow Jacket products, this is a well constructed tool, works as intended, and should last a long time. Feels solid and would probably be fine for professional use. Both connections thread on for a secure connection. There is a core depressor in the 5/16" side which connects to your mini split, and a Schrader core in the 1/4" side which connects to your vacuum line or core valve tool.

Works great

This the real deal. Made in USA. This is the one you need for charging mini split units. Do they cost more? Yes. Do you want one that doesn’t leak? Also yes. Don’t waste money and refrigerant on cheap ones! You will be sad if you do.

This was a excellent product

Quick shipping as ordered, thanks

I just bought a manifold, a tank of R410a, and 2p of this adapters, all from Amazon, planning to refill my leaking Carrier 2.5t unit. But, I have to return those 2 adapters because I found that my unit's service valves and R410a tank are all 1/4" without need of this adapter. So, please don't be misled by some reviews and Q&A. Most of the R410a AC units are designed with 1/4" valves as well as the R410a freon tanks, I guess. By the way, the adapter looked a good quality part.

Works great. Don't waste money on cheaper brands that tend to leak.

Good