Philips Sonicare Optimal White Standard HX6064/10, 4 Ks, Replacement brush heads for Men, The Philips Sonicare Optimal White Standard HX6064/10 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 helps prevent gum disease effectively easy to change How to use: Follow the instructions for use included.