The simplistic, cylindrical design of the Dell 593-10878 yellow toner cartridge makes the results when remanufacturing incredibly reliable. What little can be reused of the genuine Dell 61NNH is retained and everything else is replaced with high quality compatible components. The completed remanufactured cartridge is them filled with a compatible yellow toner powder designed to mimic the behavior of the genuine Dell 593-10878 toner powder as closely as possible. This remanufactured Dell 61NNH toner cartridge contains enough of this powder to offer uses the very same 20,000 page yield too!