Blue when wet and clear when dry; use 2 different ways.
For a permanent hold, apply glue to one paper surface and adhere it to another paper surface. For a repositional hold, apply it to a paper surface and allow it to dry clear before adhering it to the other paper.
Acid-free.
Squeeze and roll.
This item is purchased and shipped in bulk. You will receive 12 loose pens. Also available as a single pen purchase. See item#MSB15C.