Excellent Warranty & Service:24 hour online service, if you have any questions about this dental model, please don’t hesitate to contact us, we will provide you with the best service. Easy to Carry: Lightweight and portable, can be carried anywhere and anytime, easy to store, and it does not take up space in the pocket. It is very suitable for travel, home use, and dental clinics. Specification: ?Super fine sand polishing strip (Yellow), Fine sand polishing strip (Blue), medium coarse sand polishing strip (Red); thickness: 20µm (Yellow)30µm (Blue) & 50µm (Red). ?Before purchg, please carefully check the width of your teeth gaps and choose the thickness that suits you. Composite Resin: Grinding, dressing and polishing of composite resin, specially used for hard-to-touch interdental fillings. Helpful for Dental Care: It is very helpful for removing food residues between teeth, treating periodontal desquamation, and restoring the defects of teeth form.