This pack of 12 interdental brush heads are for use with interdental toothbrushes. Attach to the toothbrush handle and the moving brush head allows you to conveniently and hygienically change the bristle angle. The brush heads offer 180-degree mobility and let you access difficult spaces between teeth with a simple adjustment. Perfect for cleaning hard-to-reach places, such as the back of the mouth and tight spaces in between teeth as well as bridges and braces. Care for mouth and teeth: Non-electric, manual toothbrushes.