This is a compatible Okidata 43979001 black laser drum unit designed to work with Okidata B410, B420, B430, and MB400 laser printers. It delivers a yield of up to 25,000 pages, providing reliable and consistent print quality. This economical alternative to the original Okidata drum unit is remanufactured using both OEM and non-OEM parts, ensuring high-quality performance. The use of compatible drum units does not void your printer warranty. Backed by our 100% Quality Satisfaction Guarantee.