A great way of creating copies of written notes for receipt purposes or for any form of note that requires more than one copy82328232 great for self employed field based workers giving quotes receipts or taking order details 82328232 they are numbered 1 to 100 so that they can be easily matched up afterwards and ruled to keep text neat and also perforated for easy removal features plain ruled duplicate book 105x130mm carbon sheet required tape cloth binding side bound index