Q: Which FriXion pens are these refills compatible with?
These slim size FriXion refills are compatible with the FriXion Ball multi pens and FriXion Ball Slim pens listed under the Compatible Products link. They are not compatible with full-sized, single-color FriXion gel pens.
I write with this pen all the time however I seem to always run out of blue and
black ink. I wish the ink refills would last a little longer. I'm a prolific
Frixion pen user. I use them all the time for studying and sewing (you can mark
fabric and it irons off). This product is great!