What's In The Box:4 x Brother Super High-yield Toner Cartridge Black --- Brother Super High-yield Toner Cartridge, Black, Yields approx. 6,500 pages. The Brother TN436BK is a genuine super high-yield black toner cartridge engineered to deliver superior performance for Brother color laser printers and all-in-one devices. Designed for demanding office environments, it produces up to 6,500 pages (based on ISO/IEC standards) of crisp, sharp black text and graphics. The TN436BK integrates seamlessly with Brother printers to ensure consistent print quality and helps extend the life of your printer by maintaining proper toner flow. Ideal for high-volume printing tasks, it also supports Brother’s toner recycling program for responsible disposal. Product Features. Super high-yield toner cartridge – yields up to 6,500 pages. Delivers consistent, high-quality black text and graphics. Designed and tested for optimal performance with Brother printers. Helps reduce printing costs for high-volume users. Compatible with a wide range of Brother laser printers and all-in-ones. Eligible for Brother’s toner recycling program for eco-conscious users.