Alphabet letters in bold, blue print are versatile for a variety of classroom needs. Excellent for spelling practice, letter recognition lessons and various pocket chart activities. All cards are 3 x 3 inches. A-Z upper case letters includes 4 blank cards (30 total). A-Z lower case letters includes 4 blank cards, vowels in red and consonants in blue (30 total). Combo pack is both upper and lower case packages (60 total).