This is a premium, made in the USA replacement drum unit for Okidata 43501901 guaranteed to perform with Okidata Laser Printers. It replaces the genuine (OEM) Okidata 43501901 drum unit. This drum is made with top quality components and new toner to give you the highest quality printouts every time. This compatible or remanufactured for Okidata 43501901 drum unit is specially engineered to meet or exceed the highest standards of quality, reliability and page yields. Although this drum is not made or endorsed by Okidata, it offers customers an economical alternative to expensive OEM Okidata 43501901 unit and comes with our satisfaction guarantee.