Model / JBN-209 Dimensions / 248 X 316 X 27 mm Material / paper, metal - . A total of 2 options . Middle clamp / durable and sturdy . Suitable for fixing A4 size files . The photos are for illustration only, the product does not contain paper for inner pages! - https://live.staticflickr.com/65535/49889647371_66c3a8c816_o.jpg ※ Because there is a slight color difference in the shooting, the picture is for reference. Please refer to the actual product received for the color.