Feature: Built in 50 meters of bare wire, Mini wax, mint, flat wire, implication of advanced science and technology content; using sterile operation, ultraviolet process, that the use of security products. dental floss threaders dental floss refill- The product is made of hard plastic box clean, sanitary packaging. dental floss threaders dental floss refill - The company production of dental floss thickness uniform, clean, smooth and flexible. No hair, no wire, no wax , no visible impurities; can effectively prevent and treat toothache.The material is nylon line. This product adopts the method of winding bobbin hive, appearance, packaging box design ingenious, sanitation, and convenient carrying and use, as the daily necessities of the art. Health beautiful teeth, lasting brilliant smile!