• Includes pigmented black ink and DYE color ink from the OCP brand. • Comes with a carrying case and adapter for air purging. • Detailed instructions for cartridge refilling. • Compatible with HP cartridge models: 21, 22, 56, 57, 27, 28, 74, 75, 92, 94, 95, 96, 97, 98, 60, 901. • These are not generic or universal inks; they are specifically formulated for these models. • The kit includes: 1 bottle of 100 ml of pigmented black ink, 1 bottle of 100 ml of cyan ink, 1 bottle of 100 ml of magenta ink, 1 bottle of 100 ml of yellow ink. • Includes 4 syringes with needles, 1 pair of gloves, and 1 black purging carrying case with rubber for air extraction.