... the double axis to transmit the machine smoothly. So it is guaranteed not to out of shape and shake when it works ... wood, thin metal and etc.Technical Parameters Machine ModelTK-6090G stone cutting machineX, Y,Z Guide RailSquare RailX,Y TransmissionBall ScrewSpindle Power ... ,4mm,6mm(or8mm,12mm,12.7mm)Table Size900*600mmX,Y,Z Repositioning Positioning Accuracy±0.03mmX,Y Resolution<0.02mmN.W480KGG ...