This high capacity ink cartridge is designed to work in IH600AF, IH600HF, IH700, and IH750 mailing machines. The ink is fluorescent red and is in compliance with the United States Postal Service (USPS) guidelines on fluorescence.
Compatible ink cartridges are designed to meet the same specifications as OEM parts. The ink is tested to the same standards. So you get the performance without paying for the cost of brand names!