... 0.00125 mm/step (0.0005 in./step)Spindle motorBrushless DC motor, maximum 50 WSpindle speed5,000 to 20,000 rpmTool chuckCutter ... in.) or 38 mm (1.5 in.) when nose unit is usedConnectivityUSB (compliant with Universal Serial Bus Specification Revision 1 ... cord, depth regulator nose (nose unit), nose-unit retainer (retaining screw, spring), spare mounting screw (for the cutter holder), character cutter ( ...