A versatile, high-performance patching compound formulated to stop running water through deep cracks, holes and imperfections in concrete and masonry surfaces. It creates a watertight seal in 3-5 minutes, even while water is flowing. It works both above and below ground level. Also great as fast-setting anchoring cement to permanently anchor fence and railing posts, bolts, machinery and fixtures into concrete and masonry surfaces. Interior / exterior use. Adheres to concrete, masonryCreates a watertight seal in 3 to 5 minutes, even while water is flowing, sealing leaking holes and cracks applicationsFor use with concrete, masonryPlug and seal holes in concrete, watertight seal, use while water is flowing, use as anchoring cement characteristics