Item Type: Metal Bookends Material: Iron Product Size: Approx. 130 x 120 x 180mm / 5.12 x 4.72 x 7.09in ( Manual Measurement, Slight Error May Exist ) Maximum Retractable Size: Approx. 240mm / 9.45in ( Manual Measurement, Slight Error May Exist ) 1?��Premium Metal: This book stoppers are made from premium metal material, which is sturdy and durable. ?2?��Retractable Design: This metal book stopper feature outstanding retractable design, the length can be adjusted from 5in to 9in. ?3?��Nonslip Pads: This metal book stopper has anti skid pads that ensure high stability and high safety. ?4?��Space Saving: This metal book stopper can be easily adjusted according to the size of desktop, saving your spaces. ?5?��Widely Used: This metal book stopper can be used to hold up magazines, books, dvds, encyclopedias, text books, hardbacks, comic books, binders, cookbooks, reference books, albums.