Replacement brush head are compatible with all of the following handle models.
HX3631, HX6011, HX6012, HX6013,
HX6014, HX6018, HX6100, HX6150,
HX6160, HX6211, HX6212, HX6321,
HX6411, HX6431, HX6500, HX6510,
HX6511, HX6530, HX6582, HX6590,
HX6631, HX6711, HX6730, HX6731,
HX6732, HX6780, HX6781, HX6782,
HX6902, HX6910, HX6911, HX6921,
HX6930, HX6932, HX6933, HX6934,
HX6942, HX6950, HX6952, HX6982,
HX8911, HX9110, HX9112, HX9160,
HX9170, HX9172, HX9332, HX9342,
HX9352, HX9362, HX9372, HX9181,
HX9382, R710, R732, RS910,
RS930, RS950, etc.Mijoyee