This is a compatible replacement for the OkiData 42102801 Type C9 laser drum unit guaranteed to perform with your OkiData laser printer. It replaces the original OkiData 42102801 Type C9 laser drum unit. The compatible replacement for 42102801 Type C9 laser drum cartridges and supplies also known as generic are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM Original Equipment Manufacturer standards for the 42102801 Type C9 and offer high-quality printing results. The use of compatible replacement laser drum units and supplies does not void your printers warranty. Our compatible laser drum is a replacement for OkiData 42102801 Type C9 drum unit. Our replacements for the black laser toner fit into the Type C9 drum housing. You can replace the cartridges without replacing the entire drum housing. This is the drum unit only, it does not include the toner cartridges which can be purchased separately. The 42102801 Type C9 drum yields 25,000 pages.We offer a Two Year 100% Quality Satisfaction Guarantee on our compatible alternatives to 42102801 Type C9 laser drum units and supplies. LD Cartridges are manufactured in an internationally certified ISO 9002 factory. LD cartridges come with a 100% Two Year money back guarantee and technical support. For use in the following printers Okidata B4350n, B4300n, B4350, B4300, B4100, B4200, B4250.