Original 4000 PSI average compressive strength blend of Portland cement, sand and gravel or stone
Use for setting posts and building sidewalks, downspout troughs, steps, floors, patios & curbs
WARNING: This product can expose you to chemicals including Silica, crystalline, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65Warnings.ca.gov/