Cleans more thoroughly: this replacement brush is specially suitable for the electric toothbrush Bitvae D2. Replacement brushes with "W" shaped bristles adapt to the shape of your teeth to get deep clean. Denser bristles, stronger vibration and more thorough cleaning. The blue bristles fade after 3 months of use to remind you to replace them for optimal cleaning results. More hygienic packaging: replacement brush heads compatible with Bitvae D2 electric toothbrush. Each toothbrush head equipped with dust cover is then sealed in plastic bag and packed together in paper box. Three layers of protection avoid dust pollution during packaging and transport. Dust protection is also perfect for travel. Gum health: toothbrush heads compatible with Bitvae D2 electric toothbrush. If the bristles are not rounded, the enamel can be easily sanded in an environment with strong vibrations. Our toothbrush heads are equipped with rounded bristles and 96%-99% of the bristle tips are rounded before packaging, which not only cleans hard-to-reach areas better, but also protects teeth and gums from damage. High cost performance: brush heads compatible with Bitvae D2 electric toothbrush. Dentists recommend replacement brush heads every 3 months, so 10 pieces replacement heads can be used for 2.5 years, and the price is more appropriate. No worries after sale: attachments replacement heads compatible with Bitvae D2 electric toothbrush. If you have any questions, please do not hesitate to contact us directly by email, we will answer you as soon as possible, your satisfaction is always our first consideration.