Gorilla Original Gorilla Glue, Waterproof Polyurethane Glue, 2 ounce Bottle, Brown, (Pack of 4) Incredibly strong and versatile; The leading multi-purpose waterproof glue Best for tough repairs on dissimilar surfaces, both indoors and out 100% Waterproof; Doesn't break down when exposed to outdoor elements Versatile; Easily bonds wood, stone, metal, ceramic, foam, glass, concrete and much more! Incredibly Strong: Expands 3 times into the materials to form an incredibly strong bond