This Brother black TN4100 compatible toner cartridge is a brand new compatible cartridge specifically designed to work in your Brother printer. The brand new black TN4100 compatible toner contains 1 black compatible non-oem cartridge. The TN4100 black printer cartridge 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 TN4100 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 TN4100 black prints approx. 7500 pages at 5% average coverage. These non-oem TN4100 cartridges are brand new and made to work straight away in your printer Easy to install and saves over £70 buying the equivalent genuine black per cartridge! HL-6050,HL-6050D,HL-6050DN, HL-6050DW