When your working on the precise areas of your mosaic these pens make life so much easier. Aleene’s Original Tacky Glue Pens are perfect for precise application and work on just about every surface. Its thick, tacky formula grabs items on contact and dries super strong, clear and permanent, making it great for bead mosaics. Even better, it’s nontoxic, and won't knock you out with fumes while working.