Effective Cleaning: The electric toothbrush head’s contoured top bristles naturally conform to the shape of your teeth, while the slim, angled neck and dense bristles reach hard-to-clean areas. Compatible with Sonicare 1100 2100 4100 4300 5100 5300 6100 6500 7000 7300 7500 9000 9300 9500 9700 9750 9900.
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