The Quikrete High Strength Liquid Gray Polyurethane Construction Adhesive 10 oz is a professional-grade, one-component adhesive formulated for durable, long-lasting bonding across a wide range of construction materials. This gray, moisture-cured polyurethane adhesive offers a flexible elastic bond that helps absorb movement and resist cracking once cured. Designed for use with a standard caulking gun, it permanently bonds concrete, masonry, brick, stone, wood, metal, PVC and other common surfaces, making it ideal for repair, installation and general construction tasks in both residential and commercial settings.