60 count CO2 16g non threaded cartridge C02 keg charger soda Mr.Fizz refill NT

Do not use for Growlerwerks one gallon Ukeg. This cylinder is a few mm longer and has a slightly larger neck that doesn't allow the chamber to seal properly. Use Leland brand cylinders, they are the appropriate size.Update: From first gen Ukegs they have a new larger tube for the cylinder. I can now use these. I had issues with other brands as well and was informed of the design change.