Description Report Item Product Introduction: 1 substitute brush head compatible with DR BEI bet-c01/Dr-Bei C1/C2/S7 Sensitive Clean Sonic Electric Toothbrush 2 kit is independently sealed packed. 3 Dupont bristle , conveniently deep cleaning tooth. Warm note: If you aren't sure whether your toothbrush tournament for our brush heads,please discuss with us firstly, thank you~