I bought 4 of these for my keezer. Very well made kegs from Italy. Easy to clean and use.Pressure release ring can be pulled up and turned 90 degrees to keep it open, and to vent during a closed transfer from one keg to another.7/8” wrench or socket works to take off the posts for cleaning them and the dip tubes.Remember to add keg lube to the o-ring on the lid, make sure the lid is seated properly, and then hook up the CO2 at least 30psi to secure the lid in place. Doing so will insure your kegs won’t leak. After the lid is pressurized and secure, you can unhook and vent the CO2, then set your regulator to the desired amount.The extra set of O-rings was nice too. Always good to have backup in case of the rubber failing sometime in the future. Keg lube will prolong the life of them though.Overall, they’re great quality, built very well, and definitely worth the investment. Would definitely buy again if/when I need more new kegs.