InkOwl Extra-Large Refillable Cartridges for BROTHER LC71, LC75, LC79 (80-100ml capacity) + 4x120ml ink + syringes The elongated refillable cartridges can hold 80-100ml of ink each, for around 4000 pages between refills (at 5% coverage). Refilling is easy thanks to the easy-to-remove plugs. Just remove the plug, inject ink, and put the plug back in. Since the cartridges are bigger than the originals, they will stick out the printer. Two different door clips are included which can depress the printer's door sensor, allowing you to print even with the door open. Depending on your model, you will use either one clip or the other. The included instruction sheet will tell you which clip you need to use and how to install it. Dust filters are included which, when installed, will prevent dust from entering into the cartridges. This kit contains 4 bottles of 120ml each of Ink Owl's premium ink for Brother printers. This ink will provide a fantastic result on both documents and pictures. It is easy to fill the cartridges up thanks to the included syringes and needles. Product contents: set of 4 elongated refillable BROTHER LC71/75/79 cartridges, 4 bottles of 120ml Ink Owl ink for Brother printers, 4 syringes with needles, 4 dust filters, 1 door clip, detailed instruction sheet covering the whole process from start to finish.