The product that started it all. Original Gorilla Glue® built a name for itself with its incredible, industrial holding power and versatility. The water activated polyurethane formula expands into materials to form an incredibly strong bond to virtually anything making Gorilla Glue® your solution for almost any project or repair. To use, prepare and dampen the surfaces, evenly apply Gorilla Glue® onto the dry surface, and clamp the two surfaces together tightly.