ND Brand Dinsink 4x30ml refill ink kit for HP 21 22 ink cartridge:FAX 1250 FAX 3180 OfficeJet J3608 OfficeJet J3625 OfficeJet J3635 OfficeJet J3640 OfficeJet J3650 OfficeJet J3680 OfficeJet 4315 OfficeJet 4315v OfficeJet 4315xi...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 Four bottles 30ml ink The ink quality is same as OEM ink