Ordered this for myself as a birthday present after looking in store last week at them. Ended up getting an extra fine and this was perfect for my writing style as I write particularly small. I’d say that the equivalent line thickness is about a sailor medium-fine. Inked it up with a Pelikan Edelstein ink and it’s a smooth writer. Everyone who showed me this pen and let me roam the store to find the best gift for myself were super helpful and although I could have used a discount to get this pen cheaper elsewhere I’d rather spend the money where I know faces and names.