Lexmark CS/CX310 Return Programme 1K Toner Cartridge Black 70C20K0Designed to work flawlessly with your machine and benefiting from hugely impressive modern technological advancements, this cartridge dispenses top of the line toner for high quality results and makes automatic adjustments when needed. Easy to install, you are guaranteed professional results from start to finish with this branded, Lexmark product, justifying the huge reputation the brand enjoys. This item also boasts a generous 1,000 page yield.