Cartritech Remanufactured Toner Cartridge Replacement for HP NT-C3903F ( Black ) For HP Laserjet 5MP 5P 6MP 6P 6PXI 6PSE 6RE 3100 3150 OEM Part Number : HP C3903A (03A) Type : reManufactured, Print Yield : 4,000 Yield, Print Color : Black