Do It Wiser Toner Cartridges Set For Konica Minolta Bizhub C250, C252 - Black Yield 20,000 pages - Color Yield 12,000 pages Black Yield 20.000 Pages - Color Yield 12,000 Pages Black Cyan Magenta Yellow Compatible with Konica Minolta 8938-509 8938-510 8938-511 8938-512 2 Year Warranty