This is a recycled cartridge that has been factory serviced, refilled, and tested. This cartridge will perform as well or better than a new OEM cartridge and will often contain more ink than a new cartridge. 100% guaranteed. Replaces 4640, R5956, T5480, 310-5368, 310-6963, 310-5881, 310-6968, 310-6271, 310-7159, J5566, 310-6965, 310-6970, 310-7161, 310-5372, 310-5883, 310-8342, 310-6273.