Designed piece by piece to work perfectly with the Lexmark MS818dn and MS817dn, the genuine 53B2000 is one of the very best choices for your printer. The black toner powder contained within the Lexmark 53B2000 gives an exceptional quality of print, producing anything from the darkest of blacks to the most subtle of shading.This original Lexmark 53B2000 toner cartridge gives an estimated 11,000 prints before it will need changing, making your monochromatic laser printer refreshingly cheap to run. This black toner cartridges comes fully guaranteed by Lexmark, in the rare instance a technical issue occurs.