Features: Function,tooth file is used to clean foreign bodies between teeth and maintain orals health Reasonable designs,dental sandpaper has a certain degree of softness and can fit closely with the pressing surfaces to maximizes polishing effect Easy to use, the tooth sandpaper is overall lightweights and easy to use Long term use,each order contains a roll of dental strips abrasive,you only need to cut down the required length when using, which can support your long term use There are 4 styles optional,please confirm your need before order. Specifications: Materials:Sandpaper Color;01,02,03,04 Package Includes: 1Piece Dental Polishing Strips note: Please allow 1-2cm errors due to manual measurement. Due to the differences betweeen different monitors,the picture may not reflect the actual color of the item.