Review on 🧊 Efficient Self-Sealing Lichamp Refrigerator Recharge Piercing: Preserve Your Cool! by Marquel Henry

You will not receive anything but paperwork. So if you are inexperienced with automatic air conditioning I would look elsewhere. Also, you get a lot of detail and detail for your money and it worked well both times I've used it. ALWAYS CHECK THE VALVE on new self-sealing refrigerant cylinders. At first I thought I might have used the wrong valve, but I didn't turn it clockwise far enough to open the valve in the jar. I had to twist hard enough not to break anything. Whether or not it was a freon tank I'll never know, but eventually it leaked out of the tank into the system and the gauge worked fine. I didn't hook up my full set of 134a gauges to compare the readings, but I imagine they would be within a pound or two of each other.