Compatible with models such as X/X PRO/Z1 / F1 / One/Air 2 / SE, this replacement head set ensures stable installation, efficient vibration transmission, and uncompromised cleaning performance. density DuPont bristles Soft and fine without harming the gums, suitable for users with sensitive teeth and gums. They provide deep cleaning while reducing the risk of bleeding during brushing. 12 replacement brush heads Includes 12 replacement brush heads, sufficient for the whole family for six months to a year, eliminating the trouble of frequent purchases. Economical and practical, you can them as needed. 3D cutting with a wavy brush surface Threedimensional cutting plus a wavy brush surface closely adheres to the curvature of the teeth, easily reaching the gaps between teeth and along the gum line, effectively removing dental plaque and providing a more thorough cleaning. Use scenarios Family use: A shared set that covers multiple users over several months, reducing the need for frequent replacement purchases. Gentle cleaning for sensitive gums: Soft bristles minimize irritation while delivering effective cleaning. Daily interdental cleaning: The 3D cut and wavy surface reach hardtoclean areas between teeth and along the gum line for comprehensive plaque removal.