8 Piece Assorted Abrasive-Round Ball Set For Dremel

8 Piece Assorted Abrasive-Round Ball Set For Dremel is a Mounted Stone set of different sized round ball abrasive Dremel Rotary Tools to be used with a Grinding Stone Wheel. Sizes range from 3mm to 16mm (sizes are 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm and 16mm) with a shank that is 3mm wide by 1 inch long.