Ballpoint Pen Refill Set 0.5mm Red, Blue, Black, 2 each Brand: Pentel Compatible Products: Calme, Vicuna, Feel Vicuna Multi-Color/Multi-Function Colors: Red, Blue, Black Size: 0.5mm Model: BXS5 New, unused, unopened. I was stocking these for the ballpoint pens I use, but the pen bodies broke and it became difficult to obtain the same ones. If possible, I would appreciate it if you could purchase them all together.