These are 18x26cm (7x10in) Mylar sheets.

There are 5 different scripts/fonts and one with Icons.

Punch up your Bullet Journal, Scrapbooking, general crafts project or break out the airbrush and go mad.

These seem to be part of a larger collection which I'm sure you could track down if your a completest. 

These are numbered 2, 3, 13, 15, 18  & 19. Which gives a good mix from Modern Calligraphy to austere Army. I can't guarantee these numbers, but I'm fairly sure, all the packs I have are the same.