3M 20916-320 320 Grit Sandblaster Between Coats Sanding Sponge Pad Ideal for fine sanding between paint or varnish coats Clog-resistant and flexible for fine sanding between paint or varnish coats Tough foam backing will conform to contoured surfaces and resist tearing Electrostatically coated, self-sharpening aluminum oxide mineral for increased durability and worklife Color-coded gold and imprinted with grit for easy selection