Conveniently-sized, 2 1/4 x 10 strips of acid-free .011 white paper. They have a die-cut notch which you may choose to use to keep the strip from sliding down between the pages of the book. Use these to tag items for treatment, or give them to researchers to mark pages. These strips will not harm your volumes, even if left in place over an extended period. Available without the notch on request. Packages of 100.