Oral-B Precision Clean Replacement Electric Toothbrush Heads are designed to provide an enhanced cleaning experience. Each head features end-rounded bristles that aim to improve teeth cleanliness and gum health. The bristles also include an indicator to notify users when it's time for replacement. These brush heads are compatible with most Oral-B rechargeable handles, excluding the Oral-B iO series. Engineered to remove plaque and aid in the prevention of gingivitis, they are recognized by the American Dental Association. Each pack contains two brush heads that are manufactured in Germany.