4pcs Replacement Toothbrush HeadsCompatible for X3U/X3pro/D2/D3S/D5Tooth Brush Head Nozzle Jets(4 Soft Black)

- 4-Piece Set: Practical quantity for regular replacement, fitting personal or small family daily use. - Fits X3U/X3pro/D2/D3S/D5: Precisely compatible with these toothbrush models, ensuring tight fit and stable performance. - Optimized Nozzle Jets: Specialized nozzle jet design helps direct cleaning power to hard-to-reach areas. - Gentle Bristle Touch: Soft bristles reduce irritation to gums while providing thorough cleaning. - Easy to Install: Snap-on structure allows quick replacement without the need for extra tools.