green-products LC101 LC103 LC105 LC107 Refillable Ink Cartridges with Auto Reset Chips for Brother MFC-J285DW, MFC-J4310DW, MFC-J4410DW, MFC-J4510DW, MFC-J4610DW, MFC-J470DW, MFC-J4710DW, MFC-J475DW The cartridge can be easily refilled and reused many many times. It's like rechargeable batteries vs. one time use batteries Predrilled refill and venting hole and rubber plugs on the top of each cartridge. It is enviromental friendly green-product - You save money and save the earth by reducing the land fills. The side panel is transparent. You can easily view the ink level and refill them if deemed necessary. bulk ink can be purchased at a low price. Green-products is the only authorized seller. Other sellers are not only violating "inkrefillable" trademark, but also their products can be inferior and damage your printer.