HP 304 2-pack Black/Tri-color Original Ink Cartridges. Cartridge capacity: Standard Yield, Black ink type: Pigment-based ink, Colour ink type: Dye-based ink, Black ink volume: 4 ml, Supply type: Multi pack, Colour ink page yield: 100 pages, Colour ink volume: 2 ml, Quantity per pack: 2 pc(s), Black ink page yield: 120 pages