Maintain peak, teeth-cleaning performance with Equate SmileSonic Pro Advanced Clean Replacement Brush Heads. The medium toothbrush head replacements are compatible with the Equate SmileSonic Pro Advanced Clean and Philips Sonicare click-on electric toothbrushes for optimal brushing action and plaque removal. Blue Replace-Me® Bristles fade with use to remind you when it's time to install a new replacement brush head. The Advanced Clean tip targets hard-to-reach areas, while the Bacteria Defense bristles help keep your electric toothbrush head clean for up to 3 months by inhibiting microbial growth.WARNING: NOT INTENDED FOR CHILDREN AGE 3 AND UNDER.