Contain in-plant spills under leaking equipment and machinery. These "mini-booms" are dust-free and contain no abrasive granules that can damage equipment. That's because they're made from an innovative microfiber material, which contains millions of tiny pockets that can absorb and hold petroleum-based liquids. 3M petroleum sorbents allow you to reclaim the oil for easy recycling and re-use. Each case contains 4 mini-booms, which will absorb 3 gallons each