ND &trade; Brand Dinsink 4x30ml refill ink kit for HP 21 22 ink cartridge:Deskjet F4135, Deskjet F4140, Deskjet F4150, Deskjet F4172, Deskjet F4180, Deskjet F4185, Deskjet 3910, Deskjet 3915, Deskjet 3920, Deskjet 3930, Deskjet 3930v, Deskjet 3940, Deskjet 3940v,...The item with ND Logo! ND Brand refill ink for HP 21 22 ink cartridge The item comes with detail refill instruction. You can refill ink for your original ink cartridge. It is a big saving. Highest UV resistant rating on market Three bottles 30ml color ink The ink quality is same as OEM ink