Fits the following Philips Sonicare electric toothbrush:
DiamondClean:
HX9312 HX9322 HX9331 HX9332 HX9340 HX9342 HX9350 HX9351 HX9352 HX9359 HX9361 HX9362
HX9371 HX9372 HX9381 HX9382 HX9392 HX9393 HX9903 HX9924 HX9954
ProtectiveClean: 4300 4100 5100 6100 HX6800 HX6801 HX6803 HX6805 HX6806 HX6807 HX6876 HX6870 HX6877 HX6850 HX8491
EasyClean: HX6211 HX6212 HX6231 HX6221 HX6250 HX6253 HX6530 HX6510 HX6511 HX6512 HX6552
2 Series Plaque Control: HX6220 HX6211 HX6231 HX6201 HX6212 HX6221 HX6250 HX6252 HX6253
3 Series Gum Health: HX6631/01 HX6632/09 HX6616/50 HX6616/51 HX6616/52 HX6631/01
HealthyWhite,HealthyWhite+: HX8923 HX8911 HX8918 HX6710 HX6712 HX6722 HX6730 HX6733 HX6750 HX6781 HX6782 HX6780
FlexCare+,FlexCare Platinum: HX6921 HX6930 HX6950 HX6972 HX6970 HX6934 HX6902 HX6903 HX6910 HX6920 HX6932 HX6985 HX9110 HX9111 HX6911 HX6952
PowerUp: HX3100 HX3110 HX3120 HX3130 HX3300 HX3631
Sonicare for Kids: HX6311 HX6312 HX6320 HX6321 HX6322 HX6330 HX6340
Take a look above for the full list of compatibility, if you're still unsure, please feel free to use Amazon's customer Q&A:
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