Product review (5 stars): Worked perfect. Opened and closed it about 6 times
Worked perfect.  Opened and closed it about 6 times, no leaking.  This saved me a ton of money.  My fridge wasn't cold.  I checked that all the fans worked and condenser coils were cleaned.  Still not cold.  So with a leak suspected, I contacted a store I cant mention but it rhymes with beers.  They had a guy come out (late) and he didn't even check the pressure of the refrigerant and said I needed a new compressor.  I let him bail after the $999 quote after doing zero to find the problem.  I bought this bullet piercing valve, hooked it up and sure enough it was way low in pressure, a vacuum in fact.  Refilled slowly to specs and the refrigerator is better than its ever been since I bought the house.  Now admittedly I have to find the slow leak that let this happen but it beats paying for a new compressor AND STILL having to find the leak that caused the problem.  This simple gem lets us "uncertified" technicians save ourselves from being ripped off by the "professionals."