Designed 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. Seamless design. using the highest quality materials and lubricants. minimises printhead wear. Features: • Minimal wear due to high quality ribbon material • Metered ink flow for consistent. high quality output • Precisely controlled ink viscosity for optimum coverage • Precisely tooled ribbon shield minimises paper jams • Up to 4 million characters in draft print modeCompatible Printers: Unisys UDS 1300 Series. Unisys UDS 1321. OKI Microline 520 n. Unisys UDS 1320. OKI ML 521. OKI ML 520 Series. OKI Microline 520. OKI Microline 520 Series. OKI Microline 521. OKI Microline 521 n. OKI ML 521 n. OKI Microline 521 Elite. OKI ML 520. OKI ML 520 n. OKI Microline 520 Elite. OKI ML 520 Elite. OKI ML 521 Elite