... & high precision,Working without computer,standard configuration of 32M storage capacity ,save nine files simultaneously, power off restoring, continuation ... Speed0-6000mm/s Rotation Speed of Spindle Motor6000-24000rpmEngraving ToolΦ3.175 ,Φ4,Φ6(optional)Dictate FormatG-Code Ball ... 7.Vacuum System(optional) 1500W 300x250x40mm SD3025MV Mini CNC Router CNC Engraver processing small precision instruments