Suitable for 5 Series, 6 Series, and Cheetah Series models: 50-R1000s, 50-B1300s, 50-R1320s, 50-R1300s, 50-M4000cs, 50-M4200cs, 50-M7200cc, 50-W4320cs, 50-B7000cc, 5018S, 5020S, 5035s, 5049s, 5050cs, 6075cc, 6020s, 6040cs, 6072cc, 6075cc, 6090cc, 7020s, 7025s, 7027cs, 7071cc, 7075cc, 7085cc, 7089cc. High-Quality Materials: Made from high-quality materials designed for continuous, efficient, and easy-to-use performance. Optimal Shaving Performance: For best results, we recommend replacing the shaving head every 18 months. After extended use, cutting performance may gradually decrease. Advanced Processing Technology: The replacement head features advanced processing technology that enhances the overall performance of your shaver. Restore Shaving Efficiency: Replacing the head helps restore your shavers performance, providing a closer and more comfortable shave. Regular replacement helps maintain long-term performance. Color: As shown Material: ABS + Metal Package Contents: 2 x Shaving Heads Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.