840 Multipurpose labels perfect for addressing, shipping and return addressing. 40 sheets, with 21 labels per sheet, all 63.5mm x 38.1mm in size. Suitable for use in laser, colour laser and inkjet printers and copiers. Avery labels are guaranteed "jam free" - no jams, no delays in printing! Outstanding printing quality and fully compatible with most popular laser, colour laser and inkjet printers including HP, Brother, Lexmark, Konica-Minolta and more. All labels are designed to format and print with the FREE downloadable Avery DesignPro 5 Lite which is easy to use creative design and print software.