Compatible with 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 for continuous, efficient, and reliable performance. Optimal Shaving Performance: For best results, replace the shaving head every 18 months. Over time, performance may decline after trimming hundreds of thousands of hairs. Advanced Processing Technology: The replacement head features advanced processing technology to enhance your shaver's performance and appearance. Restore Shaver Performance: Replacing the head helps restore your shaver to optimal condition, providing a closer and more comfortable shave. Regular replacement ensures long-term peak performance. Color: As shown Material: ABS + Metal Package Contents: 2 x Shaving Accessories Note: Package includes only the items listed above. Other accessories are not included. Lighting and display settings may cause slight color variations between the product image and actual item. Measurement error allowed is +/- 1-3 cm.