JFT 3040 600w+ 4 Axis +Usb Port +Mach 3 CNC Router/Carving/engraving Machine (4 Axis +600W) 1 year machine part Free warranty ,if the machine's part broken in one year ,we will send you the new part,and we pay the shipping fee.Shipping By DHL Or FedEx. High quality ,All the products have passed the European CE certification;the best cost-effectiveNew exterior design, beautiful generous Z axis travel up to 90mm, which can meet the carving large objects and add fourth axis use requirem The XYZ axis is arranged travel limit switch, to avoid the operation process of the trouble The New TBI SFU1605 Ball ScrewMore Strong And Accurate.it's Accuracy Is 0.02-0.03mm.