10 Pack Blue Medium Point Ballpoint Pen Refills - Compatible With Penagain Pens - Bulk Office & School Supplies for Smooth Writing Experience

I usually order blue, purple, or black of these PenAgain refills, and they work great! But when I ordered and used the green ones the pen didn’t write as smoothly and the ink cartridges seemed to run out (or perhaps dried out?) faster than with the other ink colors; I’m not sure why, maybe the green is less frequently ordered and therefore older ink, or maybe it has different ingredients that cause the differences I’ve noticed. Whatever the reason, I do not recommend the green ink, but the other colors I’ve tried have all been good and these are a good value.