The Waken Mouthcare Sonic Toothbrush Heads pack includes three replacement toothbrush heads to pair with your Sonic Toothbrush handle. Derived from castor oil, each bristle delivers a comfortable and gentle cleanse for an effective brushing experience. The toothbrush heads are easy to attach and simple to remove with a simple twist and slide. As it is recommended to replace your toothbrush head every two to three months, the pack offers enough heads for six to nine months. Set Contents: White Sonic Toothbrush Heads x 3