• Made with high-quality DuPont filament, the soft and rounded bristles offer a gentle massage to the gums and enamel. • 3D curved bristle design: short bristles clean the surface of the teeth while long ones reach spaces and gum edges. • Effectively removes plaque, calculus, and tea and smoke stains, helping to restore the natural color of the teeth. • Compatibility: suitable for Xiaomi and Soocas X3 electric toothbrushes. • Includes 8 replacement heads for a deep clean.