This is a holder for Clinica Advantage Dental Floss. It's brand new and unused! You can attach it to a washbasin or other surface as shown in the second photo. ☆About Clinica Dental Floss☆ I've been using it every day for over two years. It's economical because the floss can be washed and reused! We also use a floss holder in my house ^_^ The floss is short and doesn't fit well in a toothbrush stand, so the holder is convenient ♬