Formulated specifically for bonding gem materials to metal findings. Provides water-clear bonds and hardens in only 2 hours (or 10 minutes under a heat lamp). Also used for invisible bonding of glass, china, ceramics, and other non-porous materials. Consists of 1 tube of epoxy resin and 1 tube of hardener, the sum of which is 1 fluid ounce. Made in USA.