ND Brand Dinsink Refillable Ink Cartridge for Brother LC71 / LC75 / LC79(non_OEM) Ink Cartridges, Brother All-In-One Printers: MFC-J6910DW + 400ml ND Brand Bulk Refill Ink Specially Formulated for Brother - Cyan, Yellow, Magenta, and Black Color + 4 Syringes.The item with ND logo . The prefilled ink cartridges can be used as regular ink cartridges for an easy using. This cartridge can be easily refilled and reused again and again.High Yield and Saving Costs: By refilling the cartridges, you can save 70-90% of the cost on OEM cartridges. There are easy-refill hole and rubber plug on the top of each cartridge. It is very easy to remove the plug for ink refill and replace it back after refilled for the easy refilling. The cartridge is transparent. It is easy to view how much ink left to prevent from lack of ink to cause air bubbles or how much ink filled in to avoid overfill for easy operation. These patented cartridges are environmental friendly, 3R (recycle, reuse, reduce) green products for endless inkjet printing with big saving.