LD Compatible Ink Cartridge Replacement for Pitney Bowes 797-Q (Fluorescent Red) Page Yield: 800 | Shelf Life: 36 months The use of compatible cartridges and supplies does not void your printers warranty Our compatible postal meter red ink cartridges all exceed USPS requirements for fluorescence All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee For use in the following Pitney Bowes MailStation: MailStation 2 (K7M0)