The new fun and convenient must-have study aid. Great for learning Vocabulary, Math, Science or any subject! Study cards are pre-punched, to use with the enclosed binder ring, and perforated. Use as full-size or half-size cards. Full-size card is 3" x 5", if used half-size then 3" x 2 1/2". Great study aid for any subject. 75 full-size index cards per individual pack. 0.25" Binder ring included to hold cards together. Micro-perforated to turn into study cards as needed. Ruled for easy note taking. White. 3" x 5" Card size.