Designed for a range of OKI fax machines and laser printers, this replacement image drum helps to renew diminished print quality up to 10,000 pages. As you use your OKI laser printer, waste toner and wear and tear on parts can lead to reduced quality and poor output. Installing a replacement imaging unit helps to renew your printers mechanisms, leading to crisp blacks. OKI printers use a separate image drum and toner cartridge, which helps to keep costs down and save money per page.