A Gripit reusable dental floss holder threaded with a floss refill available at local drug and grocery stores. Note how floss crosses the gripping teeth two times. After threading, just snap the cover closed and you are ready to floss. The gripping teeth hold floss tightly. To advance fresh floss, open the cover just enough to unlock the gripping teeth. Pull the floss tail until fresh floss is in place. Snap the cover closed. Your Gripit flossing tool is ready to make flossing fast and easy.