I was very disappointed with this product. The only issue with these pens is that the ink flow is very poor, but that's a BIG problem for me. It bleeds around the curves in my letters making the words look sloppy. If I pause for too long I am frequently met with a glob of ink pouring out the second I put the pen to paper. I had a set of these pens a while ago and they were the BEST. Sadly, I could never find them when I went to office supply stores. I figured they'd gone out of business. Naturally, when I saw them on Amazon I was very excited and bought 2 boxes. Bad idea. Now I'm out $20 and have 24 pens that I don't have any desire to use. I would not suggest this product if you like neat and fine lettering.