Set of 5 thin brass strips that can be used for scoring and/or folding paper or cover stock. Used for folded book structures, paper engineering projects, pop-up cards, etc. Eliminates a lot of time measuring. Comes in standard widths of 1/4", 1/2", 3/4", 1", and 2".All folding strips are 12" length. Brass will not mar paper. Recommended by Hedi Kyle in her new book, The Art of the Fold.