Non-OEM, (4 x 100ml) Bulk Black 400ml refill ink for HP Officejet printer OPT Brand. Free shipping from New York. Total 400ml Black ink(4 x 100ml) and 1 long needle syringe. Refill instruction included. 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. Stable performance without color fade. Lessens impact on landfills. 100% satisfaction guarantee.