3M 20907-180 Sand Blaster Sanding Sponges, 2.5 by 3.75 by 1-Inch Fast finishing sanding sponges, long lasting sanding sponges Between coats Fast finishing sanding sponges, prepares for next coating Long lasting sanding sponges Clog resistant Fast Finishing Sanding Sponges, Long Lasting Sanding Sponges Between Coats Fast Finishing Sanding Sponges, Preapres for Next Coating Long Lasting Sanding Sponges Clog Resistant