... frame 3.with stepping motor 4.HIWIN guide rail High quality mini cnc milling machine for metal(7STC-6060A) Product features: With ... distortion;HIWIN linear guide and sliding block, Germany made dual screw-nut anti-gap rod, with high accuracy, low noise, and ... removing and installing;Can meet not only the high sensitivity, high accuracy, high speed small sculpture, but also can adapt to large acrylic ...