Non-OEM, (7 x 100ml) Bulk Refill ink for HP inkjet printer 6 colors C6280 C6283 C6288 C7100 C7150 C7180&nbsp;C7250 C7280 C8100 C8150 C8180 Extra Black Total 700ml ink(2 blacks, cyan, magenta, yellow, light cyan, light magenta) and 6 long needle syringes. 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.