... suitable for all kinds of metal engraving, non-metallic materials, and jade crafts engraving CNC engraving and cutting machine XJ1212Features1.Integrated optimied ... brush is of lower noise,Strong cutting strength and realize a long time mass processing.5.The cnc router is ... 175 ,4 ,6mm (optional)Format dictates G-codeBall screw Two-nut rolling ball screws from Germany Resolution 0. 01mmHigh Speed ...