Feature:1. Slim Design: The book shelf holder has a slim design, which won't take up much space on your bookshelf or desk2. Retractable Structure: The book shelf holder has a retractable structure design, which can adjust the retractable length according to the number of stored books3. Metal Material: The bookends are made of Iron, which is not easily deformed. With a sturdy metal construction for heavy duty supports4. 6 Color Options: The book shelf holder has 6 different colors, which can be selected according to your preference and needs5. Scope of Application: The metal book end is suitable for various situations, whether it is an office or a student deskSpecification:Item Type: BookendsMaterial: Iron.Package List:1 x Bookends