Cool Toner 4 Packs Compatible for Brother TN336 TN 336 TN331 Toner Cartridges Replaces for Brother MFC L8850cdw L8850 HLl8350cdw MFC-L8850CDW HL-L8350CDW MFC-L8600CDW HL-L8250CDN HL-L8350CDWT Printer Support - advanced technology ensures stunning performance Service - Phone services for technical support Warranty - 3-years warranty; Replacement or Refund upon request HIGH YIELD - Cartridge Yield: 4000(black) and 3500(color) Model --- Brother HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT, MFC-L8600CDW, MFC-L8850CDW