Self-Adhesive Letters. Kids can spell names, phrases and words with this fun assortment of self-adhesive letters! In a rainbow of fun colors, this handy alphabet collection is ideal for decorating signs, posters, scrapbooks and more. It‘s perfect for the classroom! Letters come in 6 vivid colors with an adhesive backing. Foam. (40 pcs. per letter, 1040 pcs. per unit) 1/2"