High Quality: These cards are made of durable materials and feature an 8mm ring diameter, ensuring they last. Ideal for Exam Prep: These cards are an excellent tool for preparing for exams, creating personal statements, presentations, and cue cards. Convenient Storage: The package includes a storage box and eight rings to keep your cards organized and easily accessible. Colorful: With a range of multi-colored cards, you can organize your notes and ideas effectively. Versatile: These index cards are perfect for various purposes such as note-taking, creating flashcards, making lists, and more. 100% New and High Quality Type: Index Cards Card Size: 12.5*7cm/4.92*2.75in Box Size: 14.5*8*9cm/5.71*3.15*3.54in Ring Diameter: 8mm/0.31in Color: Multicolor Feature: Our index cards are suitable for taking notes, creating flashcards, making lists, etc. You can organize different things in certain colors. An ideal assistant for exam preparation, personal statement, presentation, driving test, etc. Package Includes: 150 pcs Index Cards + 8 pcs Rings + 1 Storage Box Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm size error due to manual measurement.