SAKRETE 20 lb. Gray Leak Stopper is designed to help stop water from leaking through concrete- and masonry breaks. This leak stopper can be used underwater. Dries to the color of concrete.
Helps stop the flow of water through breaks in concrete and masonry
Can help stop leaks underwater and under pressure
Great for leaks in pools
Instant-setting hydraulic cement
Mixture includes sand, cement and special additives