Quikrete 10 oz. Concrete Repair is used for filling in cracks in concrete, stucco and masonry surfaces. It is weather-resistant, textured and remains flexible. Quikrete 10 oz. Concrete Repair is designed to prevent further damage to surfaces by sealing concrete cracks from harmful water and ice. It is an easy-to-use product, needing only the use of a standard caulk gun. Color: Gray.