For use in: Sharp MX-3500N, MX-4500N, MX-3501N, MX-4501N Replaces OEM part numbers: Sharp MX-45NTBA Same Yield as the Original: 36,000 each cartridge Formulated and manufactured to produce yield equivalent to the original according to ISO/IEC 19798 standard testing procedures. Toner kit contains 2 black toner cartridges