Page Yield*: 10,000 For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) Compatible with the following Okidata MB and OKI B printers: MB461 MFP, MB471, MB471W, B431d, and B431dn Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.