(HP) Handpiece Compatible Mandrel – e-ON® Polisher Mandrel HP #78 (Benco Number 4734-852) 17mm x 2.5mm rec. RPM: 7.000 – 12.000 min-1 max. 20.000 min-1 1st Step I MEDIUM Smoothing & pre-polishing 2nd Step I FINE High gloss polishing Applications: Zirconia Characteristics: Especially for full contour zirconia restorations. Higher diamond concentration for highest efficiency. Makes glazing unnecessary.