Refillable cartridges with ARC chip With ARC chip Auto Reset Chip Show ink level Compatible cartridges For HP 10 (C4844A) - BKFor HP 82 (C4911A) - CFor HP 82 (C4912A) - MFor HP 82 (C4913A) - Y For Use With These Printers For HP Designjet 500ps Plus 24-in (C7769G) For HP Designjet 500 42-in Roll (C7770B) For HP Designjet 500 Plus 24-in Roll (C7769F) For HP Designjet 500ps 24-in Roll (C7769C) For HP Designjet 500 24-in Roll (C7769B) For HP Designjet 500ps large-format 42-in model (C7770C) For HP Designjet 500 Plus 42-in Roll (C7770F) For HP Designjet 500ps Plus 42-in (C7770G) For HP Designjet 800 24 in (C7779B) For HP Designjet 800ps 24 in (C7779C) For HP Designjet 800 42 in (C7780B) For HP Designjet 800ps 42 in (C7780C) For HP Designjet 815 MFP (Q1279A) For HP Designjet 820 MFP (Q6685A) Package include 1X EMPTY C refillable cartridge1X EMPTY Y refillable cartridge1X EMPTY M refillable cartridge1X EMPTY BK refillable cartridge 4pcs free syringes&needles installation instruction guidance Caution When you buy it ,please tell us these information notice that: IMPORTANT! ! ! ! ! what's type of your printer what's the model No. of the cartridges used on your printer 　 Please check the model of the ink cartridges and the model of the printer.Only when both of them are the same as the description here, then the Continuous Ink System can work properly. Since it may be difference cartridges model for same printer type, we have got a lot records but we may miss some special ones or you buy the printer internationally. Features Never pay with these refillable cartridges for consumable cartridges $ aves over 95% compared to ink cartridges! Comes with latest version compatible permanent chips. All of our refillable ink cartridges and parts are brand new and professionally assembled. Easy installation: no professional skills, with our guide anyone can easily install Environmentally friendly: no need to change ink cartridge, can refill for many times, cost-effectively and environmentally friendly. Affordable and practical: the new CISS system solution can save you up to 95% in costs Friendly staff Complete accessories to help you with the installation Anti-corrosion PP material, works well with any kind of ink, dye ink, pigment ink, sublimation ink General Tips for Your CISS *Please keep your large ink tanks resting on the same platform as printer, never higher! *Make necessary arrangements when children are present and can tamper with the ink system. *PRINT often, at least a couple documents per week to ensure proper flow of ink throughout entire print assembly and to prevent drying of ink within. *Remember to REFILL the ink tanks before the actual ink levels drop below 20%. Prepare for this by having extra ink on hand! *PLEASE CONTACT US if you have any questions or concerns regarding installation so we can happily assist you. Seemingly large issues may be a quick, simple fix away!