10 LB, Sakrete Concrete Mix, Quality Mixture Of Sand, Gravel & Portland Cement Which Exceeds 4,000 PSI When Used As Directed, For Repair & Building Jobs, Where Concrete Thickness Exceeds 2", Ideal For Placing Footings, Setting Posts & Poles, & Building Walkways, Driveways, Patios & Steps, Exceeds ASTM Spec C 387.
