Premium Material: Made from sturdy PP, these index card dividers are not easy to deform or fading, ensures durability and reliability for long term useHigh Efficiency: These black index card significantly enhance work or study efficiency, ensuring tasks are completed in an organized mannerAlphabet Tab Dividers: Alphabetical letters dividers featuring "A to Z" tabs, these dividers allow for customizable alphabet categories. Organize by name or any criteria to meet your unique needsVersatile Use: The set includes 30 pieces alphabet labels, alphabetical file dividers are essential tools for efficient organizationWide Application: 3x5" black index card dividers can be used for home, kitchen, office, school, suitable for kids and adults, students Specification: Material: ABS Size Chart: 12.7cmx7.6cm/5.00inchx2.99inch Package Includes: 30 Pieces Index Card Dividers Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.