The EVE Poly Polishers EVEFLEX Gray Silicone polishers are the ideal bench abrasive for the smoothing and shaping precious metals with a flex shaft, micromotor, or any other rotary tool.  The coarse abrasive is ideal for smoothing and pre-polishing precious and nonprecious metals.  EVEFLEX polishers are considerably more durable and longer lasting than most silicone rubber polishers and should be operated between 7,000–12,000 rpm (Max 15,000 rpm) for optimal results. Offered in various shapes and sizes, un-mounted and mounted also available.