These A4 invoice books come with carbonless duplicates allowing you to create multiple copies without the additional need of a carbon paper in between them will help cut costs and time. These invoice books come with perforated edges to be able to be ripped with ease. The black print on the paper will allow your invoices to maintain a minimal look. if you wish to have a coloured print, check out our other options. Ideal product for receipts, order forms and bills.