... handpiece 12000r/min The horizontal handpiece910r/minDiameter of the three-hole drill 12mm Diameter of the copying milling cutte3,5,8cmDimension ( ... CharacteristicsThe machine consists of two parts which are the three-hole drill and the copying mill. After clamping positioning one time, ... and drilling of two sides. Among in the three-hole drill part, three drilling milling cutter is driven by electric ...