Just bought my first keg and set up at my LHBS tonight…paid way to much I think, but at least a local business got some support…anyway…I bought a used keg and he gave me an O Ring set…I apparantly don’t have a wrench the right size to remove the CO2 and beer valves from the top in order to clean/change O Rings…but can someone tell me what size they are, so I buy the right ones the first time? Thanks in advance…and any other advice for a newbie kegger will also be appreciated!..Just finally grew tired of bottling…I’ll still bottle for a while but at least not every batch!