Interdental Brushs Heads Electric Toothbrush Replacement for FW-507 FW-508 | Special interdental replacement fittings for targeted cleaning with FW series electric toothbrush(FW-01 Soft)

- Fits FW-507, FW-508 and D7 electric toothbrushes for hassle-free installation. - The interdental design targets the hard-to-reach areas between teeth for thorough cleaning. - Synchronizes with the pattern of your toothbrush to ensure consistent daily use. - The lightweight construction can be easily stored in the bathroom or travel bag. - Designed to meet daily regular replacement needs.