A 17ml red fluorescent ink cartridge designed for SendPro postage meters. This cartridge yields approximately 1500 impressions and is USPS approved for official postage use. The ink is smear-resistant and remains readable when wet, making it reliable for envelopes, postcards, and self-mailers. Features plug-and-play installation through the meter menu with no complicated setup steps. Compatible with SendPro C200, C300, C400, and C425 poundsProductdimensions1.9 x 2.9 x 3.3 Count1 CountTypeInkjet Printer Ink CartridgesNumber Of Items1Package Quantity1Item Length3.3 inItem Width1.9 in