... Product Description Performance Features of Siwei powerful cnc machining centerIndustrial Machinery structure,sturdiness and durabilityProfessional control system ... steel linear rail with high precision machiningimported high speed and mute rolling ball screw, running fastItaly ... 12.7mm (optional)Transmitting systemX,Y,Z axis high speed, mute rolling ball screw from GermanyDictate FormatHPGL, G- ...