- Main Benefits: - Handy, durable, and of easy application. - Pop-on mandrel system, easy and fast installation of the discs as well as the inversion of the abrasive surface to mesial and distal positions. - Ultra-fine discs are very flexible and versatile. - Pack contains: - Praxis Refill 3/8” - 50 discs (assorted/G/M/F/XF). **For further product information, please contact Chat Support**