The Pal-O-Mine Rectangular Sponge is the cleaning attachment designed to be used with the Pal-O-Mine Rectangular and Cove Cleaning Tool, which simply attaches to the tool by pressing the green side of the sponge to the velcro strips on the tool attachment. It is the ideal choice when it comes to cleaning many surfaces such as floor and wall tiles, laminate and wooden flooring, as the pad acts like an eraser on dirt, and it best used when wet. Sold individually.