Compatible for Fairywill Interdental Brushs Heads Electric Toothbrush Replacement Sonic for FW-507 FW-508 FW-917 FW-959(FW-04 Soft)

- 1. Targeted Compatibility with FW Series: Exclusively engineered to fit FW-507, FW-508, FW-917, and FW-959 sonic electric toothbrushes. The precision connector ensures a secure snap-on fit?align with the handle and press gently to lock, no wobbling during operation. - 2. Interdental Design for Deep Gap Cleaning: Features a slim, targeted shape that specializes in cleaning between teeth. It easily reaches narrow interdental spaces where regular brush heads may miss, effectively removing trapped food residues for comprehensive care. - 3. Sonic-Optimized Performance: Tailored to sync with the sonic vibration technology of compatible FW models. The brush head amplifies vibration transmission, leveraging the toothbrush’s power to enhance cleaning efficiency in hard-to-reach areas. - 4. Gentle Bristles for Comfortable Use: Crafted with soft, flexible bristles that are gentle on gumlines and tooth enamel. Despite its interdental focus, it avoids causing irritation, making it suitable for daily long-term use by users with different oral conditions. - 5. Sonic-Optimized for Thorough Cleaning: Tailored to work in harmony with T100’s sonic technology. The brush head amplifies vibration transmission, leveraging the device’s power to reach deep between teeth and ensure comprehensive cleaning for a fresh feeling.5. Durable Construction for Longevity: Made with high-wear-resistant materials. The reinforced bristle base prevents shedding and deformation, ensuring each interdental brush head maintains reliable performance for an extended period, offering great value.