... 3.Italy air cooling spindle with too changing, high power , original cutters , high precision .long lifetime.4.Whole machine is welded ... .All adopt imported square oribit ,two line sliding track, heavy loading, stable working , high precision and long lifetime.Adopt imported ballscrew ... ,Artcam,Caxa).7.6 zones vaccum table, special wood door engraving area make the products more perfect.SKM25 is round ...