Sakrete® 65200007 Maximizer® Concrete Mix, 80 LbMaximizer Concrete is a proprietary formula that yields more coverage than standard concrete mixes. Maximizer features a specially manufactured aggregate material and higher volume of cement yields a mix that gives you 67% more coverage. More cement also means a more uniform & easier to mix blend than other concrete mixes. Plus maximizer gives you an outstanding strength of 5,500 PSI, making it the strongest all purpose concrete mix you can buy,