Quikrete 8620-05 862009 Mortar Repair, 5.5 oz. Squeeze Tube, Pack of 1 For use tuckpointing and sealing mortar joints Sanded acrylic formula that adheres to brick, block, stone and concrete surfaces Water-resistant acrylic formula remains relatively flexible, with minimal shrinkage and excellent adhesion Textured and colored to give the appearance of masonry mortar Unique square opening is ideal for filling 3/8" mortar joints