COMPATIBLE Lexmark...521....Black Toner..52D1000 ....Return Program ...Page Yield 6000...for:Lexmark Printers: MS711DN,MS710DN,MS710,MS812DE,MS812DN, MS810DE,MS811DN,MS810DN,MS812DTN,MS810N, MS811N,MS810DTN,MS811DTN....
 "52D1000 COMPATIBLE Lexmark Black Toner Return Program 6k")