Details: color white material: iron size: 15 * 19.5 cm length adjustment range: 10-50cm weight: approx. 0.75 kg Package content: bookcase * 1 【Flexible Design Book Shelf】 You can stretch or shorten the metal letters as your requirements, it is a great desk neat for book lovers. Retractable length from 10cm to 50cm to meet various needs. 【3-tier design】 3-tier design file runners. Adjustable letters has three reinforced profile construction for extra strength and stability. Robust and durable metal construction. Properties non-slip and won't scratch the surface of your desk, bookcase, furniture. 【Widely used】 Cheerful cut-outs make these pull-out metal letters perfect for children's rooms, home offices, study , Kitchen - wherever books are within reach. Put it on a desk, dresser, countertop, or shelf. 【Best Gift】 Keep your book organized and space saving. Perfect to decorate your room, desk at home or office. Practical gift for your friends, colleagues, classmates and families.