Image shown is actual grain. These are industrial grade 3" x 132" MCL sanding belts. MCL is a heavy duty "Y" weight alumina ZIRCONIA full polyester coated abrasive material, with a closed coat. MCL is excellent for sanding stainless steel and carbon steel where grinding temperature is an issue. It can also be used on non ferrous metal. Keystone Abrasives warranties all of our sanding belts for manufacturer’s defects and your satisfaction is completely guaranteed!