California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Formulated to reduce the risk of surface shrinkage cracks, Sakrete Crack Resistant Concrete Mix is a professional strength blend of cementitious materials, sands, stone and fibers. For repair and building jobs where concrete thickness exceeds 2.. This item has been restricted from sale in the following state (s): []