Precision Compatibility with FW-507/FW-508/D7/D8 Sonic Toothbrushes.These interdental brush heads are engineered specifically for FW-507, FW-508, D7, and D8 sonic electric toothbrush models.
Interdental Design for Targeted Gap Cleaning.Crafted as interdental brush heads, they feature a slim, tapered structure tailored to clean between teeth—areas often missed by standard toothbrush heads.
Synergistic Performance with Sonic Toothbrush Motion.As sonic toothbrush replacement heads, they work in sync with the oscillating or vibrating motion of compatible FW-507/FW-508/D7/D8 models.
Easy to Replace for Hassle-Free Maintenance.Replacing the interdental brush heads requires no specialized tools: users simply detach the old head from the sonic toothbrush handle and secure the new one via the model’s standard locking mechanism.
Suitable for Daily Oral Care Routines.The brush heads are built to support regular daily use with the compatible sonic toothbrush models. Their durable bristle structure and sturdy head casing withstand the mechanical stress of sonic toothbrush motion.



















