From the Manufacturer:
These tiny, double-sided adhesives are perfect for permanently bonding items like rhinestones, beads, pictures, ribbon and sequins! Glue Dots bond to most surfaces including cement, metal, wood, foam, tiles, leather, glass and more. This package contains 300 1/2 inch circle all-purpose clear adhesives. Acid free, archival quality. Non-toxic. Conforms to ASTM D4236. Made in USA.