Adjustable spacing: The retractable book ends extend from 1 to 2.6 inches to fit different book sizes, keeping shelves tidy and adaptable. Versatile usage: Made of metal and suitable for books, magazines, and small dictionaries; ideal for office, dorm, or home shelves, blending functionality with simple style. Durable finish: Premium electroplated metal with a colorfast finish that resists wear, providing stable and long lasting support for home or office use. Modern triangular design: Sleek, compact form saves space on desks and bookshelves while adding a contemporary touch to your room. Use scenarios: In an office, place along a row of reference books to maintain order and quick access. In a dorm room, organize course textbooks and magazines on a shared shelf. On a living room desk, keep compact dictionaries and small notebooks upright for easy reach.