Model Number: P-HX6044 Key Specifications/Special Features: Key specifications/special features:1. One pack have 4 pieces2. Advanced bristle system removes more plaque and cleans deeper than manual toothbrush3. Interdentally tips to penetrate deep between the teeth4. Indicator bristles color fades signaling replacement5. Dentists generally recommend changing brush heads every 3 monthsCompatible models include:HX6100 | HX6150 | HX6411 | HX6431 | HX6500 | HX6511HX6530 | HX6711 | HX6730 | HX6731 | HX6732 | HX6780HX6781 | HX6782 | HX6902 | HX6910 | HX6911 | HX6912HX6921 | HX6930 | HX6932 | HX6933 | HX6942 | HX6952
HX6982 | HX9332 | HX9382 | HX9342 | HX6011 | HX6711
HX6902
RS910 | RS930 | RS950
R710 | R732
6730 | 6731 | 6732 | 6733 | 6780 | 6782 | 6311
6921 | 6930 | 6932 | 6942 | 6972 | 6982 | 6412
6432 | 6933 | 6013 | 6014 | 6016 | 6017