It took a while for me to get the hang of this, but once I did, I was able to slowly and carefully bottle home made soda from my keg without losing much carbonation. There were some pieces of teflon thread tape that made it into one of my bottles, so make sure you run clean water and turn all the valves at pressure to clean out before bottling. The side attachment where the pressure relief valve and pressure meter attaches has some movement (it's not solid), but I'm not sure if that's by design.I also bought the Counter Pressure Accessory Package with the ball-lock attachment (KEG803). The original gas line that came with my keg was 1/4†ID, 1/2†OD, but the gas line that came with the accessory package was 5/16†ID, 9/16†OD. So, the T adapter that came with it was very difficult to attach onto my smaller gas line, but I managed to stretch my skinnier tubing onto the T and get it to work. I may eventually replace my original gas line with the larger 5/16" ID tubing, but I worry that the fittings that attach to my CO2 tank would not work without being replaced also.It does feel a little expensive for what you get, and it does take some time to get used to, but I'm now bottling home made sodas and preserving the highest carbonation level I've ever been able to capture previously using my poor man's beer gun (racking cane with stopper plugged into the picnic tap).