Blank perforated index cards are perfect for printing custom recipe cards, post cards, index cards, printable flashcards & more right from your home printer Index Cards measure 3" x 5" and are made to the industry standard 3x5 Index Card Layout - Making it easy to use & compatible with almost all software Bright yellow makes it easy to organize and differentiate- excellent for flash cards and recipe cards Microperforated for easy breaking apart and cleaner edges Inkjet, Laser, and Copier Compatible. Made from 65lb Cover (176 gsm) Bright Yellow Cardstock 25 Sheets / 100 Index Cards per pack Desktop Publishing Supplies Brand 65lb Bright colored 4up 3x5 Index Card Sheets make it simple & affordable to create custom index cards from your home or office printer. These high quality flash card sheets are microperforated with 72 perforations per inch for easy breaking apart and cleaner edges. Our Blank color flash cards are created to work with the industry standard 4up 3x5 index card layout- making them work with virtually all design software! Each card measures 3" x 5". These cards are made from a 65lb Cover (176 gsm) Bright Colored Cardstock that is both inkjet and laser printer compatible.