3Mâ„¢ Wetordryâ„¢ Cloth Roll 281W is an aluminum oxide Wetordryâ„¢ roll constructed on a screen cloth backing. Used dry or with water, 3Mâ„¢ Wetordryâ„¢ Cloth Roll 281W enables the user to rinse areas of the workpiece and the roll during use to prevent dust and debris from clogging the points of the abrasive; and reduces air-borne dust, while producing a faster cut at the same time.