3M(TM) Lithographers Tape 616 Ruby Red, 1 1/2 in x 72 yd 2.4 mil, 24 per case Bulk 3M(TM) Lithographers Tape 616 Ruby Red, 2.4 mil (0.06 mm) UPVC film tape with rubber adhesive. Is optically transparent and photographically opaque. Used for many lithographic stripping applications in the graphic arts industry. 3M(TM) Lithographers Tape 616, used for many lithographic stripping applications in the graphic arts industry