I was testing out a number of pens for their line width and ink quality. These pens are labeled as .38mm but draw a line that is a full solid 1mm wide. And the ink bleeds making the edges of the line very not crisp. I was very disappointed with these pens and ended up returning them.
I got the pens in sizes .38 and 1.0. I love them! The ink dries super fast the barrel is super comfortable and it’s all around one of my new favorite pens to use for drawing and writing. I can’t think of anything I dislike about it!