Card index and Flash Cards box A7 Office black/clear - Ideal for card indexes and Flash Cards. - Solid and practical sliding cover and closing notch. - Included are 100 A7 lined cards and 5 variable dividers for creating 6 variable partitions. - For up to 900 cards A8. Ideal for card indexes and Flash Cards. Solid and practical sliding cover and closing notch. Included are 100 A7 lined cards and 5 variable dividers for creating 6 variable partitions. For up to 900 cards A8.