23PCS Valve Core Removal Tool & HVAC Service Wrench Set with Hex Bit Adapters, Dual Size SAE 1/4 & 5/16 Port, HVAC Tools with 15 Valve Cores, 2 Brass Nuts for Air Conditioning, Refrigeration Equipment

Una herramienta muy práctica te ayudará a trabajar el ac de una forma más sencilla

Buena herramienta para cambiar el gusanillo sin escape de refrigerante

This kit has the 1/2-20 adapter for the minisplit port. I haven't used it yet, it just came in, but it sure looks solidly made and a great buy.

I haven't hooked this up to a micron vacuum gauge to see how well it actually holds, but it seemed to hold pretty steady overnight with a needle gauge. Although everything looks good as far as clean well-mating threads with not much swarf. I did see a few bit of brass dust on a couple of the O rings, and it would have been nice if a few extras were included. I have to get my hands on a micron gauge so I can bench test it and hopefully use it the next time I install a mini split to vacuum and nitrogen purge the lines.The little wrenches and bits are a nice addition to the little tool bag, if you don't already have some.

This was for my husband and he’s happy with the purchase. A nice bag to keep it in came with it too.

Two systems before the core tool started leaking. Oh well. Cheap enough.

And fits.

I just used this tool to change a leaky core on my friend's old AC. It only took two minutes. Without this tool, it would take hours to do. First you have to recover the refrigerant. Change the valve core, and then evacuate the system for a couple hours. Finally you still got to put the refrigerant back in the system. In order to do all that, you will have to have a manifold gauges set, a recovery machine, it recovery bottle, or multiple bottles depending on the system size, and a good vacuum pump.Besides the core changing tool, you also get to ratchets in full common sizes, and Allen key that fits the charging port valve. It comes with 10 valves cores. However, I didn't use them. The one came out of the old system has a black band. So I replaced it with another one with a black band. There's no documentation listing the compatibility and specification of the valve cause that comes with it. It also comes with a very basic theme bag to store everything in.I really like this kit for the quality, and affordability. I give it five stars.