Easy to Classify.The adjustable bookend have 3 grids together,so different kinds of books or can be into different grid to keep your books or desk tidy and clean. Adjustable.This desk storage organizer is flexible and can be re-sized according to the number of books. Good lifespan.The book ends for office is made of high-quality ABS,it is very strong and not easily deformed. Widely application.Desk bookshelf can use to magazines,encyclopedias,text books,hardbacks,comic books,family albums,and more. Warm note.In order to better use the bookends,you would be better to place the bookends close to the wall and do not stretch the bookends to the . Scene: Office, Study, School, Library, And any other place you need to organize Model: Retractable Annex: Pen holder Bookshelf size: Height: about 7.5in / 19cm The Maximum Length: about 19.3in / 49 cm The Shrink length: about 8.5in / 21.5 cm Pen holder size:about 3.15x4.33inches / 8x11cm Colour: white Material: ABS, PP, non-marking stickers Package Contents: 1 * Expandable Bookend (with white pen holder) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.