Review on NovelBee HVAC Valve Core Removal Tool Set with Dual Size 🔧 SAE Ports, Brass Adapter, 20 PCS Valve Cores, and 10PCS Brass Nut by Josh Jeffries

And it almost seems to work but if you buy that to remove the cores it's junk and you can't get them out through the ball valve. I've used this to evacuate the gap, ideally remove the core, pull the vacuum, release some refrigerant to create a slight positive pressure, reinsert the valve, remove the VCRT, release the rest of the charge, and you're done . I had to abandon the valve core (which just runs slower) because the thing wasn't working. Everything else he did well, but not for the intended purpose. I contacted the seller and got no response so at least their customer support is consistent, their support and product are equally lacking.