COLORiT Bond (5ml) is the primer that is required for Color adhesion to larger inlays, over shiny metal surfaces or jewelry that will be electroplated after COLORiT is applied. It forms a chemical bond between COLORiT and the metal to which it is being adhered to.  First, apply a layer of COLORiT Premium Bond (8213662) and let air dry. Next, add a layer of COLORiT Bond and light cure. Finally, add COLORiT Colors as desired and light cure as normal.  Please note that COLORiT Bond ships via UPS Ground only and cannot ship Air.  Made in Germany.