Arbe DSM-100 Double Spindle 1/2 HP Polishing Motor Ransom & Randolph and the top holes are

and the top holes are 0

and repeatable

Choice of Dumont INOX stainless steel or Dumont Dumoxel anti-magnetic stainless steel

Microscope: Leica A60 / A60 F (sold separately)

Arbe DSM-100 Double Spindle 1/2 HP Polishing Motor Ransom & Randolph and the top holes areThe Arbe DSM 100 is engineered to deliver maximum power and efficiency for professional jewelry polishing. Part of the Arbe Pro Series line, this double spindle motor features exclusive design elements not found on comparable units, making it the preferred choice among professional jewelers and metalsmiths. The DSM 100 accepts 1 2" spindles (spindles not included). Features Rubber framed resilient base mounting reduces vibration during operation for a