This is a coaster pattern and when the suggested yarn is used turns out perfect as waterglass coasters.

Size of coaster with suggested yarn:
Unblocked - 7 cm or about 2,75 inch
Blocked - 8 cm or about 3,14 inch

You can use any yarn and hooksize, it depends on the size of the coaster that you want.

No need to check gauge

Finished coaster weighs about 2,5g (so you will be able to make quite a few with just one skein of the suggested yarn)