OKI 40709902. Type: Original, Compatibility: OKIFAX 4500, 4500MF, 4550, 4580, Quantity per pack: 1 pc(s). Approximate page yield (A4, black & white, ISO/IEC 19752): 10000 pagesDesigned for precise compatibility with Oki’s products, and manufactured to the highest possible standards, only Oki consumables ensure maximum performance, longevity and ultimate cost-effectiveness. This is a separate image drum unit for lower running costs.Features:• Toner cartridges & image drums can be replaced separately• Designed specifically for use in the OKIPAGE range • Up to 10,000 pages A4 continuous print