Description: dry tumbling media, is an innovative way of finishing parts. ECO-FLEX, has a density of 60 lbs per cubic foot, higher than most plastic and other dry medias such as corn cob and walnut shell, resulting in faster finishing times. No water or compounds are needed, therefore no effluent is created. ECO-FLEX is self-cleaning, eliminating the need for treating, dressing or metal impregnation. It is ideal for any project and comes in preformed shapes and sizes to avoid lodging. More dense to reduce process time. NO DUST!