Suitable for OKI B411d/411dn/431d/431dn Page yield: 5%, 25,000 pages Color: BK Packing: neutral packing All cartridges are fully re-manufactured in China Contain new and reconditioned parts Replace 1:1 for all the defectives Advantages: All our goods are 100% tested on line 100% guarantee Customized package is supported The defective rate is no more than 1%