Non-OEM, (5 x 100ml) Bulk Refill ink for HP printer 4 colors cartridge 88 10 11 12 82 901 Extra Black Total 500ml ink (2 Black, Cyan, Magenta, Yellow) and 4 long needle syringe. No refill instruction. This ink is produced in dustless workshop & with third time filtration, particulate at size in 0.2. So the nozzle won't clog. This ink is Anti-UV dye ink, which can resist against sunshine so that printings can last longer in color. This ink was made with the color paste from USA and the chemical additive/formula supplied from Germany and Japan. Made in China. 100% compatible to HP printers. Each 100ml ink = 5~7 cartridges.