Mini Blank Flash Cards with Binder Ring - 1.5 X 3.5 Set of 3 Decks, 80 Cards Each (240 Cards) Small size of 1.5" x 3.5" (35 x 90mm) makes cards ultra-portable Binder rings keep cards together Each card is printed with gridlines (5mm grid) to make neat writing easier Comes with 3 sets of 80 cards each Cards have large holes to slide easily on binder ring