Grit: 9u ,15u, 30u, 40u, 60u Size: 4in X 150 ft X 3in High efficiency , Durable, This product is used for polishing chromium-plated gravure cylinder matched with Chromium-plated Gravure Cylinder Polisher. It can highly improved the smoothness of the chrome surface to achieve high quality printing performance . 3M Polishing Tape