Optibond Solo Plus features Kerr?s proprietary ethanol-based, filled adhesive technology that has proven to protect better against microleakage. 15% filled, Fluoride releasing, direct/indirect applications, Available in Single dose units or bottle delivery. The real key to Optibond Solo plus is that it is so simple to use. Apply, lightly dry, light cure and you?re finished. No Multiple coats, no sensitivity. It?s time you entered the Optimal Bonding Zone with Optibond Solo Plus. Bottle Refill Adhesive 5ml"