Pioneer Epoxy Clay Aqua (Underwater Epoxy) is hand-moldable, specialty epoxy putty optimized for repairs damp, wet areas, and underwater surface. It forms a polymer compound after mixing that can be applied underwater in both fresh and saltwater environment, as well as to any dry surface. It bonds tenaciously to substrate such as fiberglass, concrete, metal, ceramic, glass, wood, and various type of plastic. Each handy stick contains pre-measured portions of activator and base, no measuring or mixing tools required – simply cut, mix and apply.