Features: Printer Models: Combo pack ink cartridges are compatible with for HP305XL,for DeskJet 2710 2720 4110 4120 6420 printer, please confirm your printer model before placing an ink order. Latest Upgraded Chips: Ink cartridges has been better improved to provide 100% compatibility, perfect performance and high yield pages. Large Capacity:Use with complete compatibility and ink level display, High-quality ink, print with crisp text,Large capacity cartridges increase the quantities of prints. Save Earth Resource:Compatible printer consumables help to save earth resource ,your printing work will be more economic,and waste ink rate is low,good compatibility,does not hurt ther printer. Customer Service: With customer satisfaction as our first priority, we offer a satisfaction service for all of our merchandise. If you have any problems, please contact us in time. We will give you replies as soon as possible. Specification: Shell Material: Plastic Compatible with: for HPDeskJet 2710 2720 4110 4120 6420 1*Ink Cartridges Replacement