Generic Replacement Toothbrush Heads Set is designed for all users of Braun electric toothbrush. It is easy to install and remove. All brush heads are CE, ROHS and FDA approved, you dont need to worry about the health or safety even your 6-year-old kid use it. The brushing action in all dimension offers you and your family total mouth cleaning. 12 toothbrush heads all in 1 set will definitely meets your need of changing brush heads every 3 month!