Adjustable Book Ends Features: Our bookends come with a detachable metal pen holder and a stylish one-piece design, which can be easily adjusted from a maximum length of 50 cm (19.6 inches) to a minimum of 15 cm (5.9 inches). You can customize the length according to the thickness and number of books or folders. Each set includes two refrigerator magnets and a pack of sticky notes, as a wonderful gift. Independent Design, Organized Storage: These book ends for shelves are designed with three compartments, which are perfect for classifying various types of books and documents. They can safely store magazines, DVDs, encyclopedias, binders, family albums, cookbooks, and reference books, allowing you to easily find your favorite books. Desk Organizer: These adjustable bookends are your perfect desktop companion, which can keep your books and folders organized and make room for other tasks or items. Suitable for bookcases, bedside tables, schools, libraries, or anywhere you need to be tidy. Ideal Gift For Book Lovers: Made of high-quality metal with rivet-fastened construction, these bookends for shelves are not only durable but also practical, making them a great gift for any book lover in your life. Tips for Use: To optimize the bookends, adjust them to the number and thickness of books, filling the length as much as possible. If there are fewer books, place the office accessories against a wall for added stability. Detailed instructions are included in the product photos.