Description Blend of masonry cement and graded sand to make a long lasting, strong bonding mortar for laying brick, block, or stone for walls, columns, etc.; and for repairing damaged non-structural joints in brick, block, or stone masonry. Activated with water. WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer, birth defects or reproductive harm and Butyl Benzyl phthalate (BBP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov