ND&reg; LC101 LC103 LC105 LC107 LC109 Refillable Ink Cartridges CISS with Auto Reset Chips and 4 X 500ml Dye Ink Refill Kit for BROTHER MFC Printers The cartridge can be easily refilled and reused again and again. There is easy-refill hole and rubber plug on the top of each cartridge. It is enviromental friendly green inkjet product - Save our earth with a much less cost. The cartridges are transparent. It is easy to view how much ink left.