Made from premium American DuPont filaments, the soft rounded bristles can gently massage gums and enamel when brushing. With 3D curved bristles, the short bristles can clean the surface of the teeth, and the long ones penetrate deep into the gaps and edges of your gums, which better fits the shape of your teeth and cleans from multiple angles. The toothbrush head Sonic replacement teeth can effectively remove plaque, tartar, tea stains and smoke stains, helping you restore the natural color of your teeth. Compatible model: compatible with Xiaomi toothbrush Deep Cleaning Teeth, for Soocare X3, for Soocas X3 Electric Toothbrushes. Package includes 8 replacement heads for Xiaomi Deep Cleaning Toothbrush.