3M™ Lithographers Tape 616 is an optically transparent and photographically opaque tape primarily designed for many lithographic stripping applications in the graphic arts industry. It is available in a wide selection of widths and lengths to meet almost any demand. - Ruby red UPVC film backing to allow accurate positioning. Resists effects of changing atmospheric conditions to allow repeated and extended burn times. Low caliper backing to minimize ghosting and provide sharper definition.