Philips Sonicare Premium Plaque Defense HX9042/87, 2 pc, Replacement brush heads for Women, The Philips Sonicare Premium Plaque Defense HX9042/87 replacement toothbrush heads help you to get the best results from your oral hygiene. Changing the heads regularly guarantees you are always cleaning your teeth as effectively as with a new brush. Characteristics: removes plaque cleans teeth even in hard-to-reach places comfortable and easy handling cleans teeth very gently easy to change cleans interdental spaces far better than a manual toothbrush does the brush head follows the shape of the tooth better than a conventional manual toothbrush does removes far more plaque than a manual toothbrush does How to use: Attach the replacement head to the appropriate brush and click into place.