Reviews (23)excellent Service delivery was a little slow but not too bad I install mini splits and on occasion need extra refrigerant based on line set length. These are perfect for a top off. Best price I’ve found so far. First time ordering on whatnot, so was not sure what to expect. Surprisingly easy process, delivered and as described. Fast shipping. Product arrived as described showed up as shown, no issues. order with 100% confidence! it's legit. product arrived new as described. Have not opened it to use yet, but looks accurate.