No punching out of letters, no staples, no pins and no tape required. A unique adhesive makes these letters removable, repositionable and reusable. They are easy to use - just "peel and place". They adhere to any clean and dry surface that is smooth or slightly textured (even wood and painted brick wall). Fade-resistant, acid free, leave no residue and never become permanent. Each package contains upper case letters along with numbers and punctuation marks. The 4" letters have 78 characters in a package. Ideal for bulletin boards, signs, posters, presentation boards and much more.