Concrete bonder acrylic adhesive makes concrete repairs that hold. This product contains an exceptional acrylic polymer formulation that insures strong, permanent bond between new and old concrete, mortar or plaster. Just brush it on any clean, sound surface and apply the new cement mix. Use inside or outside. This product will increase bonding strength 8 to 10 times when applied as directed. Eliminates the need to chip or roughen the area to be resurfaced or repaired.