3M™ SandBlaster™ Pro Dual Angle Sanding Sponge , 4.5 in x 2.5 in x 1 in. This sanding sponge is ideal for between coats of finish on freshly coated surfaces, such as wood and metal. The two angled sides are helpful when sanding small details or getting into corners. Use it to level surface imperfections after the first topcoat application. 3M™ SandBlaster™ Pro fine sanding sponges finish fast, last long and clog resistant.