"The scratch pattern that results from using this silicon carbide paper is nowhere near uniform. The particle sizes are random which results in horrible scratch lines, when used wet or dry. .If you need to use this for automotive or need a high gloss finish, then pay more and get a quality paper. The paper is too rigid, and creases too easily and the abrasive delaminates in clumps. I cannot understand all the positive reviews here. This stuff is not for professional use."