... 3.with stepping motor 4.HIWIN guide rail High quality mini cnc milling machine for metal(7STC-6060A) Product features: With 600mm* 600mm ... and no distortion;HIWIN linear guide and sliding block, Germany made dual screw-nut anti-gap rod, with high accuracy, low ... the real-time trajectory, plus or minus Z-axis depth in real-time, and adjust the motor speed conveniently;Powerful compatibility ...