This OKI black 42127457 compatible toner cartridge is a brand new compatible cartridge specifically designed to work in your OKI printer. The brand new black 42127457 compatible toner contains 1 black compatible non-oem cartridge. The 42127457 black printer cartridge is a high capacity toner and is suitable for all types of printing and offers top value compared to buying the original cartridges. Fully chipped and ready to go. All our 42127457 premium toners are made to highest standards and carry the ISO9001 worldwide quality certification. Our toners are formulated to each printers individual specification ensuring perfect results every time. Offering a much higher printing quality than universal toners. Which are unfortunately widely used in the UK by other inferior cartridge manufacturers and distributors. The 42127457 black prints approx. 5000 pages at 5% average coverage. These non-oem 42127457 cartridges are brand new and made to work straight away in your printer Easy to install and saves over £40 buying the equivalent genuine black per cartridge! C5250, C5450, C5510, C5510 MFP, C5540