... 2.frequency spindle cooled by water 3. perfect MZS1313 CNC Engraving Machine / CNC Router with 6 spindlesPerformance featuresThis series adopts advanced digital ... and good durability,Rotary parts is optional which is for engraving cylinder material.Available materialCopper, aluminum, jade, acrylic, ... 4mmFile formatG-code/HPGLResolution≤0.01 mm MZS1313 CNC Engraving Machine / CNC Router with 6 spindles