ECO INK &copy; Compatible / Remanufactured for HP 15 C6615DN (1 Black) Ink Cartridges for HP Deskjet 3820, 810, 810C, 812, 812C, 825, 825C, 825Cvr, 840, 840C, 841, 841C, 842, 842C, 843, 843C, 845, 845C, 845Cvr, 920, 920C, 920Cvr, 940, 940C, 940Cvr, HP OfficeJet 5110, 5110A2l, 5110v, 5110xi, V40, V40xi, HP PSC 500, 500xi, 750, 750xi, 950, 950vr, 950xi, HP FAX 1230, 1230xi, HP Digital Copier 310 HP Deskjet 3820, 810, 810C, 812, 812C, 825, 825C, 825Cvr, 840, 840C, 841, 841C, 842, 842C, 843, 843C, 845, 845C, 845Cvr, 920, 920C, 920Cvr, 940, 940C, 940Cvr HP OfficeJet 5110, 5110A2l, 5110v, 5110xi, V40, V40xi HP PSC 500, 500xi, 750, 750xi, 950, 950vr, 950xi HP FAX 1230, 1230xi, HP Digital Copier 310 1pk HP 15 BLACK C6615DN ink ECO INK