1.100% pure PTFE resin: Expanded micro-structure characterized to clean plaque easily 2. High abrasion and guaranteed shred resistant. 3. Chemical inert to acids and alkali, caustics, solvent and hydrocarbons(014PH);No infection of gum. 4. Gently stimulates gums and helps prevent gingivitis and periodontal disease. 5. Silkysmooth texture slide easily and comfortably between teeth; 6. Effbctively removes food particles and tough plaque from between teeth and just below the gum line. Our company's common model is SDF-80——SDF-150,and we can produce the other models based on your special requirement.