A good quality artist's grade masking tape.
Black Crepe Masking Tape 1 in
3M Scotch 1.88 in. x 60.1 yds. General Purpose Masking Tape (Case of 24) 2020-48MP - The Home Depot
This tape is great for blocking light, sealing the edges of your art work, identification and much, more. It has a rich, deep black color.This crepe
Artist Black Masking Tape 1 x 60 Yard Roll
Blick Masking Tape - Black, 1/2 x 60 yds
Free Painters Tape - Colaboratory
Pro Artist Tape White / 3/4 x 60 yd
JVCC TR-2X Adhesive Transfer Tape
3M Scotch 1.88 in. x 60.1 yds. General Purpose Masking Tape (Case of 24) 2020-48MP - The Home Depot
A black, nonglare crepe paper tape that is opaque and conformable. Mask unwanted portions of transparencies, positives and negatives. Cover light reflecting surfaces in the darkroom. Acid free.
Pro Art Black Photo Tape
Drafting Tape by Pro-Tape
A good quality artist's grade masking tape.
Black Masking Tape Acid Free 1 inch x 60 yards
Scapa T002 ATG Tape [Acid Neutral] @ FindTape
Scotch® ATG Adhesive Transfer Tape Acid Free 908, Gold, 1/2 in x 36 yd, 2 mil - The Binding Source
Black Masking Tape, 1W x 60 yds. by Shurtape 172030