Why favor our toothbrush heads in your electrical toothbrush? 1. Healthy and Safety: Food Grade Material, Multiple Certification(CE/RoHS/FDA/LFGB...); 2. Good Quality with Reasonable Price: Each brush head will last use for 2-3 months, increased than others; 3. Perfect Compatible with MIJIA T300/T500 Sonic Toothbrush 4. More Choice for You Choose: Different offers will be ultra occasion your need and make you satisfied;