OKI - black - original - toner cartridge

OKI - Black - original - toner cartridge - for ES 4131dn, 4131dn+, 4161 MFP, 4191 MFP. Designed for exact compatibility with OKI products, only OKI consumables ensure maximum performance, longevity and ultimate cost-effectiveness. OKI's consumables are an integral part of the fundamental design of its printer and fax products, combining with other key elements of their design to deliver optimum durability, reliability and print quality.