Single component, polymer modified, quick setting (3-5 minutes) hydraulic cement which instantly stops running water or seepage through concrete and masonry. Ensures superior adhesion and exceptional structural strength. Use to repair basement walls and floors, swimming pools, retaining walls, wells, mines, tunnels and tanks. Can be used indoors or outside. Non-toxic, long-lasting. Available in 10 lb. jar. Remember, shipping is FREE (continental US only).