Rigid epoxy resin, based on Bis-A. Lowest odor of any epoxy resin type. Ultra low viscosity to fill hairline cracks and voids. When used with Rhino 3163 ultra low viscosity hardener, performs high strength rebonding of concrete cracks. Good Choice for RTM laminates. Moisture insensitive, 100% solids system for use with all commercial 2:1 injection and grouting machinery.