R134a Refrigerant Recharge Hose Kit for Refrigerator A/C System, R134a/R-12/R-22 Freon Can Tap Recharging Hose with Detachable R134a Quick Coupler - Easy to use

It works for car ac recharge, works for r134a cans. It would be more helpful if a brief instruction is included.

This worked like a champ with the self-sealing R134a cans I got at W@lmart. I was a little leery after reading some of the negative reviews, but was desperate to find something that had less negative reviews than this did and couldn't find anything better at this price point. The only slight negative issue I had, was when I connected an R134a can to the self-sealing adapter/valve/hose/gauge assembly, there was momentary leakage (liquid spray & gas) until the can was fully screwed onto the adapter. I strongly suggest wearing safety goggles/gloves and having a pair of pliers or wrench handy for this reason. I've recharged my cars refrigerant many times in the past, but always with the old piercing type cans. This was the first time with the self-sealing cans. For all I know, momentary leakage is normal when connecting anything to self sealing cans. Everything else worked perfectly with this hose/gauge/valve device. Overall, 4.5 stars (deducted a half star for the leakage)

Worked great

I can't really tell if the T-valve opens or closes, so I just do this...screw on can really fast and then adjust the t where it stops leakingThen attach to the low pressure port and adjust the T some more. When you see the gauge "bump up" you know it's opening or open.Holding the charge can upside down helps.This refreshed my 2003 trailblazer AC and now I have ac for the summer. I am thankful that I didn't have to buy an almost $50 can from walmart, and could instead use some generic R134a self-sealing cans I got from Harbor Freight for a MUCH BETTER VALUE.Even for a one-time-job, this will save you money over other conventional AC hoses/charge "kits" (like AC Pro)You'll also maybe need more than one can if it's not a tallboy. I had to use two stubbies to fully fill my system up to the green-band range on the gauge.So glad this works!

Easy to assemble, easy to use, and great quality! I got my car AC charged in no time and had no issues attaching to standard R-134a freon! Highly recommend for price, quality and of course the overnight shipping!