Non-OEM, Bulk refill ink for Brother LC21 LC31 LC41 LC51 LC61 LC65 LC71 LC75 cartridge Extra Black Total 500ml ink(2 blacks, cyan, magenta, yellow) and 4 long needle syringes. 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 with Brother printers. Each 100ml ink = 5~7 cartridges.