1lb x 48 Bags Swimming Pool 99% Sodium Dichlor Fast Dissolving Shock<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Super Strength Dichlor Pool Shock</li><li>99% Sodium Dichlor</li><li>48 X 1lb Bags</li><li>10oz Super-Chlorinates 10，000 gallons</li><li>Used for regular weekly shock maintenance and to remove algae， bacteria， and organic waste</li></ul></div><img src="http://ecx.images-amazon.com/images/I/513sqjlO2nL.jpg" noproxy>