If you're self-employed, keep on top of your accounts with the Silverline Duplicate Carbon Cash Receipt Book. It records payments and receipts on duplicate carbon sheets, with the back of the top copy gummed down so you can attach it to invoices. Each receipt has space for the date, payment amount and payment details. They are also perforated for easy distribution. Specifications 50 duplicate receipts per book Two carbon sheets Dimensions: H15 x W10.5 x D1cm