EK SUCCESS-Glue Pen: Chisel Tip Glue Pen 
The glue is blue when it is wet allowing for a permanent bond. It turns clear after drying for a repositionable bond. The tip size is 4 mm. Water and photo-safe, Acid free and xylene free.
The glue is blue when wet and clear when dry. For a permanent hold, apply glue to one paper surface and adhere it to another paper surface. For a repositionable hold, apply it to a paper surface and allow it to dry clear before adhering it to the other paper. Acid free.