This duplicate book features a double sheet design ideal for keeping a copy of all your records and transcations. The top sheet is feint ruled for neat notation and perforated for easy removal from the book. The second sheet is plain and serves as a permanent copy, which can stay in the duplicate book, forming a record. This duplicate book comes with two sheets of carbon paper, allowing you to write on just one sheet with an exact copy made underneath. The book measures 216x130mm and has an index sheet at the front for referencing. This pack contains 10 duplicate books.