10 colors: light purple, light green, pink, light blue, light yellow, golden yellow, orange, dark blue, emerald green, and red, 100 sheets of each color. Durable: The A8-sized lined index cards are made of 150g/m² double-sided gummed paper, thick and durable, easy to write on and ink-proof, with a one-sided lined design and a blank back. Loose-leaf binding: The included metal rings easily go through the perforations on the index cards to hold them together, making it convenient to carry study materials. Versatile: These colored index cards are not only ideal for learning vocabulary but can also be used as bookmarks, lists, etc. Perfect for schools, offices, and universities. Package contents: You will receive 1000 A8 colored index cards (10 different colors) and 10 binding rings. Index card size: 7.4 x 5.1 cm, binding ring diameter: 3.5 cm. Please note: 1. Due to different light and screen settings, the product color may differ slightly from the picture. 2. Due to manual measurement, there may be slight errors in size.