"Package Contains (Compatible) : 6 Pack of compatible ink cartridges replacement for HP 72 ink cartridges. (1 x Matte Black, 1 x Photo Black, 1 x Cyan, 1 x Yellow, 1 x Magenta,1 x Gray) Printer Compatibility : for HP DesignJet T1100 T1100PS T1120 T1120 SD-MFP T1120PS T1200 T1200PS T1300 T2300 Post Script T610 T620 T770 T790 T795 Printer WhyChoose Us : High Page Yield: 72 (Black) is 130-ml per cartridge. 72 (Cyan/Magenta/Yellow) is 130-ml per cartridge. ( at 5percent coverage ) Easy to Install: 1. Remove the PULL tape 2.Install into the printer Do not touch the chip during installation. High Performance: Premium Quality Ink delivers high-quality Vivid Color and sharp text, high Performance Results. High Quality Control: 100percent printer test for each ink cartridge to ensure fullworking condition and a superior print quality. 100 percent Compatibility: Adopting the lastest smart chips. Shows accurate ink level. Printer Recognition without problems. Firm Packaging： Packaging Protection keeps products away from possibility ofdamage during transportation and ensure your product arrive safely. ▲Tips: 1. Please clean the printing head before printing. 2. If the cartridges do not be recognized by your printer: (1) Please remove the cartridges and turn off your printer. Wait about 30 seconds and turn your printer back on. (2) Re-install the cartridges again and make sure all cartridges are individually well locked in."