Fangrui Product Details - Designed For Optimal Compatibility : This Toothbrush Head Is Specifically Engineered For Use With Bitvae D2 Electric Toothbrushes. With Denser Bristles And Enhanced Vibrations, It Delivers A Thorough And Effective Cleaning Experience. - Hygienically Packaged : Each Toothbrush Head Comes With A Dust Cover, Sealed In A Plastic Bag, And Packaged Together In A Paper Box. This Triple-layer Protection Prevents Contamination From Dust During Packaging And Transport, Making It For Travel. - Safe For Your Teeth : The Bristles Are Rounded On - Of The Surface Prior To Packaging, Ensuring Gentleness While Brushing. This Protects Tooth Enamel From Wear And Tear, Particularly When Using High Vibration Settings. - Cost-effective Solution : Dentists Recommend Replacing Toothbrush Heads Every Three Months. This Box Contains 10 Heads, Meeting Your Needs At A More Affordable Price. - Practical Use Scenarios : Ideal For Daily Use, These Toothbrush Heads Are Suitable For Maintaining Oral Hygiene At Home, While Traveling, Or As A Backup During Family Trips. Each Head Ensures A Professional-quality Clean To Support Healthier Teeth And Gums. With Focused Engineering, Hygienic Packaging, And A Commitment To Dental Health, This Toothbrush Head Is Your Reliable Choice For Effective Oral Care.