The only that I know is what is shown in the pictures, I thought that the numbers on the back if the package were the sizes and these are extra light so I would say the sizes next to the extra light would be the gauges. However I will look into this and let u know. I am working now and will look Asa I get home.
I apologize for taking so long getting the gauges to you. However I do not see anywhere on the packaging where it specifies gauges. I can only guess that it has something to do with the numbers on the back of the packages. These are just an item that I came across in some of my findings therefore I am not familiar with how the gauges and such work. I will look online and see what I can find. Thank you for your patience.