• Perfect Design: contour and shape designed by dentists and hygienists for effective cleaning • Replacement heads from the Qitizu brand with antibacterial bristles and gum and enamel protective function • High quality DuPont bristles that guarantee durability and effectiveness in cleaning • Compatible with a wide range of Oral B models for deep and healthy cleaning • Satisfactory after-sales service: contact us in case of any problem and we will send you a new set of heads for free