These Philips Sonicare C2 Optimal Plaque Defense Replacement Heads are engineered to effectively remove plaque, promoting superior oral hygiene. The brush head design ensures comprehensive cleaning coverage across all tooth surfaces. Featuring medium hardness bristles, these standard-sized heads offer a balance between effective cleaning action and gum comfort. They are designed for optimal compatibility with all Sonicare handles, ensuring a secure fit and powerful performance during every brushing session.