- Qitizu replacement heads compatible with most Oral B electric toothbrushes (except Pulsonic and iO) - Includes 20 units with DuPont bristles, known for their elasticity, hardness, and durability - Rounded, high-density bristles to protect gums and improve interdental cleaning - Round head design adapts to the natural shape of teeth, optimizing 360° cleaning - Removes up to 300% more plaque along the gumline compared to traditional toothbrushes - Colored rings to easily identify each head and share with family - Each replacement can last up to 3 months, even with frequent brushing - Bristle implantation technology with copper plate to prevent bristle loss and increase durability