The Brother Genuine LC501XLBK High Yield Black Ink Cartridge is a high-quality ink product designed for use with Brother printers. This cartridge is compatible with the Brother LC501XLBK model and provides excellent black printing results. With an expiration date of 09/2028, users can be assured of the freshness and reliability of the ink. Additionally, the California Prop 65 Warning indicates that the product may contain chemicals known to cause cancer and reproductive harm, making it important to handle with care.