Adjustable and expandable bookends: This kind of adjustable bookends can be used flexibly and can be adjusted according to the number of books. Excellent telescopic length (from 4 inches to 19.6 inches) can meet various requirements. Heavy-duty bookends: These bookends are made of heavy-duty steel and powder-coated, which are scratch-resistant and chip-resistant. The stable base is not easy to slide, and the quality is excellent. The perfect file and magazine manager: Adjustable bookends are used to store magazines, books, DVDs, games, catalogs, binders, family albums and more! Stable and sturdy: The stable base ensures that the book stays in place, enough to hold an oversized and heavy book without dropping anything. Transmission: initial size 5.7"x7.4"x3.9". The maximum retractable size is 5.7"x7.4"x19". Adjustable bookends, unique, stylish and simple. Very suitable for decorating your home or office. Not only maintain the vertical organization of magazines, books, catalogs, but also very suitable for placing DVDs, video games or CDs. Practical gifts that can be reserved for lovers and your children, teachers, friends or partners. Suitable for any occasion. Simply wring out a semi-dry damp cloth to scrub the bookends, then air dry. material: metal Size: The initial size is 5.7"x7.4"x3.9". The largest retractable size is 5.7"x7.4"x19". Package includes: 1 bookend