Premium Compatible 42102801 Black Drum Unit fully compatible with the Okidata B4100, B4200, B4250, B4300, B4350. The use of compatible supplies does not void your printer warranty.
Premium Compatible 42102901 Black Toner Cartridge fully compatible with the Okidata B4300/ 4350. The use of compatible supplies does not void your printer warranty.
Premium Compatible 42103001 Black Toner Cartridge fully compatible with the Okidata B4100, B4200, B4250, B4300, B4350. The use of compatible supplies does not void your printer warranty.