An innovative design, the Use-it Super Pad is a paper disc perforated across its entire surface. This allows the sanding dust that is produced to be removed by suction across the entire surface. The 3/32" foam layer in between the sandpaper and the backing allows for cooler sanding, and additional dust collection keeping even more dust from floating around. These discs will outlast most regular sanding discs and are available in a wide selection of grits. Due to the downturn in the ecomnomy, both of the North American Suppliers for these discs have unfortunately had to close down. Without access to more discs, all that we have in stock is all that we will be able to obtain for the forseeable future. Once they are gone, they are gone! We are very sorry for any inconvinience this causes our customers. We will do our best to remove the items as they sell out.