A speciality tape designed for film and negative masking. The tape is available as litho red. 4156 is light and age resistant and is easily removed without splitting and tearing. It does not leave adhesive residues. It is easily applied as the tape lies flat when positioned and is not prone to edge curling. 4156 is highly transparent to the human eye even without the use of a light table. Parts already masking therefore remain visible thus enabling accurate positioning of the tape.