Unused item High-Quality Material: The index cards are made of high-quality paper, smooth and easy to use, with thick paper that prevents ink from bleeding, making them perfect for writing. They come with six perforated iron rings, and the openings can be easily removed. Easy to Categorize: 300 sheets of 6-color coil notebooks + 6-ring binder in random colors. Index cards come in a wide variety of colors, allowing users to choose different colors to suit their preferences, making it easier to organize documents and memos beautifully. By using the index cards in this notebook, you can easily categorize the data you need and retrieve it quickly, improving work efficiency. Ring Binder: This ring binder is convenient for securing index cards. It is ideal for various record management tasks such as memos, studying, and project mapping. Versatile: The 3x5 index card case has various uses and is perfect for studying, taking notes, and making lists. It can also be used as a memo and is a good helper for home, school, and office! STOBOK 300 Index Cards, Flash Cards with Ruled Lines, Revision Cards, Memory Cards with Punched Holes, Punched Index Cards with Binder Rings, Random Colors, 6-Ring Binder Bundling is also available! Feel free to comment. Regarding product images, we strive for faithful reproduction, but the colors may vary slightly depending on the device you are viewing them on. Please understand. We have checked the products as thoroughly as possible, but if there are any defects, please contact us before evaluating the product.