Okidata 42103001 Toner Cartridge for B4000 Series Printers, 2500 Page Yield, Black OKI B4100 B4200 B4250 B4300 B4350 Toner Cartridge (3 000 Yield) OKI B4100 B4200 B4250 B4300 B4350 Toner Cartridge (3 000 Yield) OEM Toner