Compatible with Philips Sonicare Replacement Heads Electric Handles (ALL SNAP-ON SYSTEM), Except Essence and Philips one Compatible with Sonicare alternative heads C2,C1,C3; Compatible with Sonicare 4100, 6100, 1100, 2100, 5300, 5100, 7500, 6500, 9000, 9300, 9900, 9500 Compatible with 2 Series PlaqueControl: HX6250 HX6240 HX6210 HX6211 HX6213 HX6220 HX6231 HX6234 HX6235 HX6263 HX6275 HX9034 HX9023 Compatible with DiamondClean:HX9312 HX9322 HX9331 HX9332 HX9340 HX9342 HX9350 HX9351 HX9352 HX9359 HX9361 HX9362 HX9370 HX9371 HX9372 HX9381 HX9382 HX9392 HX9393 HX939w HX939b HX939v HX9500 HX9610 HX939p HX993w HX992b HX993b HX992w HX992p HX992x HX9903 HX9924 HX9954 Compatible with ProtectiveClean: HX4100 HX4300 HX5100 HX6100 HX681a HX682p HX685t HX681u HX684a HX6810 HX685j HX684b HX681j HX6160 HX6160d HX6150 HX642a HX642c HX6810 HX6817 HX6857 HX6871 HX6876 HX6877 HX6160 HX6150 Compatible with three Series Gum Health: HX6610 HX6616 HX6620 HX6631 HX6632 Compatible with HealthyWhite, HealthyWhite+: HX6314 HX6710 HX6711 HX6720 HX6721 HX6722 HX6730 HX6731 HX6732 HX6733 HX6750 HX6760 HX6761 HX6780 HX6781 HX6782 HX8911 HX8910 HX8918 HX8923 HX8962 HX8982 Compatible with FlexCare+, FlexCare Platinum: HX6160 HX6902 HX6910 HX6911 HX6920 HX6921 HX6922 HX6930 HX6932 HX6950 HX6960 HX6963 HX6964 HX6970 HX6980 HX6972 HX6973 HX6992 HX6995 HX9111 HX9112 HX9120 HX9140 HX9150 HX9160 HX9171 HX9172 HX9191 HX9192 HX9195 HX6160 HX9180 Compatible with EasyClean: HX6500 HX6510 HX6511 HX6512 HX6520 HX6530 HX6552 HX6581 HX6582 Compatible with PowerUp: HX3100 HX3110 HX3120 HX3130 HX3300 HX3631 HX3650 HX3220b Compatible with Sonicare Kids : HX6311 HX6312 HX6320 HX6321 HX6322 HX6330 HX6340 Compatible with Essence+: HX3211 HX3281 Other: HX3260b HX3410ag HX3300 HX3230b NOTE: Does NOT match Advance/ Essence/ Elite/ Cleancare/ Xtreme and Philips one