If you invest in quality replacement parts for your Lexmark C520 or C530 series printer, you can rest assured that it will keep working better for longer. Purchase genuine Lexmark replacement photoconductors units, as they have been designed to fit perfectly into your machine, working smoothly with all the other components to produce perfect printouts every time. This pack contains a full set of black, cyan, magenta and yellow photoconductor units, each with a page yield of 20,000.