Authentic replacement brush head for Philips Sonicare electric toothbrushes Fits Philips handles with screw-on mechanism: Advance, Essence, Elite, CleanCare, and Xtreme (Not compatible with Essence+) Preferred power toothbrush brand according to Dental Professionals Provides up to twice the effectiveness in removing plaque compared to manual toothbrushes Dentists advise changing the brush head every 3 months for best outcomes Comes with a set of 3 standard-sized brush heads