Cheap And Discounts 3018 CNC router Z axis parts T-Screw Aluminum Sliding platform 85mm Stroke Linear Actuator Kit Nema17/23 Stepper motor optional Wholesale. Buy Directly From Merchant China LYCNC Outlet Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.