InkOwl Extra-Large Refillable Cartridges for BROTHER DCP-J152W MFC-J245 MFC-J285DW MFC-J450DW MFC-J470DW MFC-J475DW MFC-J650DW MFC-J870DW MFC-J875DW MFC-J6520DW MFC-J6720DW MFC-J6920DW + 4x120ml ink These elongated refillable cartridges can hold 100ml of black or 70ml of color ink each, for around 3500 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, the door will have to detached. This is easy to do and in no way damages the door. However, you will need to depress the printer's door sensor with a long, thin item. A brown plastic coffee stirring stick works great! These cartridges come with the most recent auto-reset chips. You can reset the displayed ink level at any time by simply removing and reinstalling the cartridge. Product contents: set of 4 elongated refillable BROTHER LC101/LC103 cartridges with auto-reset chips, 4 bottles of 120ml Ink Owl ink for Brother printers, 4 syringes with needles, 4 dust filters, detailed instruction sheet covering the whole process from start to finish.