This pack of 6 Silvine duplicate memo books are great for creating duplicates of invoices or for receipt purposes.This Silvine duplicate memo book is a great way of creating duplicates of invoices for receipt purposes or for any form of note that requires a duplicate copy in an invoice template. They measure 127x213mm so it is a handy size to be kept in a pocket or carried easily in a bag. Great for self-employed field based workers giving quotes, receipts or taking order details or giving quotes. There are 2 blue carbon sheets which are placed between the top and duplicate copy when in use. 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 from the side bound pad.. Pack of 6. 214x125mm. Index sheet. Ruled feint. Numbered 1 to 100. Details for Date, to &, from, VAT and amount. Perforated . 2 blue carbon sheets