EVE Flexi-D RA Polishing Discs for Contra-angle 14mmThe unique shape of these rubber bands allows them to easily adapt to the shape of any surface, making the polishing process quick, simple, and efficient. The twist also allows for a larger coverage area, making it ideal for polishing larger surfaces such as crowns and bridges. This feature also provides durability and results in a natural, perfect brilliance after polishing. onnection type: RA Contra Angle (mandrel included) Indication Aluminium