1. Compatible for Remington Balder Pro models XR1600, XR7000, RX5, RX7 2. Replacement Head Made of highquality materials for continuous, efficient and easytouse features, Suitable for Men Wet Dry Hair Remover Replacement Heads, and easy to use. Just snap on and shave. Washable, easy to clean 3. For 5 Dual Track Shaver Heads Five large flexing rotary blades allow efficient close shaving for all types of skin closely following all the contours of your head, face and neck. Each blade has an independant rotation allowing better access to difficult areas 4. Shaver head should be replaced every eighteen months. Replacing your razor head gives a 25% better shave. For optimum performance; clean regularly