Compatible with Brother: HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT, MFC-L8600CDW, & MFC-L8850CDW Page Yield*: 4000 Color: Black. *at 5% coverage (ISO/IEC standard) For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. The use of compatible replacement laser toner cartridges and supplies does not void your printer's warranty Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.