The Avery Zweckform 1777 sales and invoice form book in blue is ideal for working on construction projects and complying with building authority policies. It contains 3 x 40 sheets, each with two copies in yellow and pink, and is imprinted with 1, 2, and 3 sheets. Additionally, it is self-copying and FSC-certified to ensure its quality. Even experts can work with it quickly and efficiently! This product is perfect for keeping a detailed record of your sales and invoices.