Calcium Sulfate Dihydrate - Gypsum - CaSO4*2H2O - Fertilizer - 5 Pounds<img src="http://ecx.images-amazon.com/images/I/41RUjPGIGDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51-1LV4cupL.jpg" noproxy>