This good quality "Invoice Duplicate Book" measures 204mm x 132mm. Comes with 100 sheets, numbered from 1 - 100 and blue carbon copy paper to transfer to duplicate. All sheets are ruled with invoice layout for writing a description, price, vat and total. Perforated at the binding edge (204mm) for easy individual sheet tear out, leaving the copied duplicate behind as a record, the duplicate can also be torn out if required. Perfect bound into booklet format for keeping all information secure. Has a strong board front and back cover for protection and stability on any surface.