【Compatible Models】 Compatible with Brother printers HL-L3240CDW and MFC-L3780CDW. 【Product Specifications】 TN299XLBK x 2 Compatible Toner Cartridges "Total 2-pack" High Capacity. Toner cartridges are individually packaged to minimize product damage and other issues. *Although not a genuine manufacturer's product, it can be used in conjunction with genuine products. 【Number of Printed Pages】 TN299XL Black: Approximately 3,000 pages/cartridge. TN299XL can print the same number of pages as the genuine toner. *Reference value when printing on A4 paper with 5% density. 【Applicable Locations】 Suitable for use in printers in various locations such as homes, offices, and schools, and is suitable for everyday printing.