Compatible with Series 5, Series 6, 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 with premium materials for continuous, efficient, and user-friendly performance. Achieve the Best Shave: For consistently optimal shaving results, replace your shaver head every 18 months. Over this time, your electric shaver can trim over 6 million hairs, gradually reducing its trimming performance. Special Processing Technology: The replacement head utilizes a special processing technique that enhances the texture of your shaver. Restore Performance: Replacing the head restores your shaver's performance, delivering a closer, more comfortable shave. Regular replacement ensures your shaver stays in top condition for years to come. Color: as shown Material: ABS+metal Package Contents: 2 * Shaver Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.