This is a Compatible Inkjet Cartridge #4102910P/ 4139534P / IJINK678H. Filled with Red UV Ink, USPS approved. Yields up to 31,500 Impressions without an ad envelope. It fits the IJ65, IJ70, IJ75, IJ80, and the IJ85. Plus if you send in you empty cartridge, you get a $10 credit applied back to your credit card, up to 2 cartridges can be sent in for this credit, all must be "Virgin" never been refilled before. Any other cartridges will not qualify for this rebate.