Refill ink cartridge with ARC for NX400 can be suitable for Epson Nx100/ Nx300/ Nx400/ Cx5000/ Cx6000... 1, 4 refillable ink cartridge with resettable chip or chip resetter. It can be refilled for many time for long-term use.2, Ease setup, handle simply, fill ink by syringe3, Higth quality and low cost, excellent customer service.4. environmental protection