3/5/10 PcsCompatible for Fairywill Replacement Toothbrush Heads ForCompatible for FW-507/508/551/515/917/959/2011FW-D1/D3/D7/D8 Electric(5 pcs Black)

- 3/5/10-piece replacement toothbrush heads compatible with FW-507/508/551/515/917/959/2011 and FW-D1/D3/D7/D8 Electric models. - Matches original head interface for tool-free direct installation on specified models. - Supports vibration cleaning actions to assist with electric toothbrush surface cleaning. - Serves as a replacement part to sustain regular use for compatible models. - Multiple quantity choices (3/5/10 Pcs) meet periodic head replacement needs.