The product worked well but make sure you screw the top part of the fitting onto the refrigerant bottle very tightly otherwise it will leak and you will waste your time filling it . I made that mistake; thought it was tight enough and when i pierced the glass there was a noticeable leak around the end of the coupler and after pulling the top of the coupler very hard to the glass it worked like a charm and the whole glass went in with no problem. . After checking with the pressure gauge I had handy, it showed that it was full and very cold in the car, and the underhood housing where you put the coolant was iced up, which is a really good indicator of the movement coolant into the system. I really wish it had a built-in sensor, but for $11 it's a pretty good buy. I just use the gauge that I got when I bought the can, gauge and hose kit together and with that gauge and hose everything worked like a dream. This is a very good product; it's long enough. How long do you need? In addition, the delivery was very fast; received it in a day USPS. Buy it, it will satisfy your needs I'm sure.
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