- Flexible discs covered with aluminum oxide. - Covered only on one side. - Four different grits. - Application in a pushing and pulling way. - Very flexible and thin for interdental application. - Kit contains : - Reducing x 20 pcs. - Smoothing x 20 pcs. - Prepolishing x 20 pcs. - High-lustre x 20 pcs. - Mandrel x 1 pcs. **For further product information, please contact Chat Support**