These Oral-B Precision Clean replacement heads are designed to provide a thorough and effective clean for your teeth and gums. They are engineered to reach deep between teeth and cover more surface area, ensuring a superior plaque removal experience compared to a regular manual toothbrush. Compatible with most Oral-B electric toothbrush handles, these heads are easy to install and replace. Regular replacement of your brush head is recommended every three months for optimal hygiene and performance.