Above is the complete video of installing the dual Z-axis to your CR-10. What we are showing in the video is the newest SainSmart Dual Z-Axis Upgrade Kit for CR-10 Standard. This kit includes original Z-axis lead screw and stepper motor replacement specially for CR-10 Standard. If you are thinking of adding more stability to your CR-10, this kit will be perfect option for you. Below is also the installation guide but with some details that you might need to pay...