Additional Details ------------------------------ Directions: 1. Ensure your electric toothbrush is turned off. 2. Grasp the toothbrush head at the base, near the brush handle. 3. Gently pull the toothbrush head straight out from the toothbrush handle. 4. Take the new toothbrush head and align it with the toothbrush handle. 5. Firmly push the new toothbrush head straight onto the toothbrush handle until it clicks into place.