Chartpak 3 Press-on vinyl uppercase letters in black color come with Helvetica style and have self adhesive that sticks to most clean dry surfaces. Chartpak 3 Press-on vinyl uppercase letters in black color are used for displays signs posters and equipment identification. Press-on vinyl uppercase letters and include 50 letters that can be used indoors or outdoors. • Black. • Size: 3 . • Material: Vinyl. • Self-adhesive backed vinyl letters and numbers may be used indoors or outdoors. • Used to apply to any clean dry surface. • Sold as 50/Pack.