Free ship Upgraded DDCSV3.1 3/4 Axis 500Khz G-Code Offline Controller Replace Mach3 USB CNC Controller for CNC Drilling Milling Free ship Upgraded DDCSV3.1 3/4 Axis 500Khz G-Code Offline Controller Replace Mach3 USB CNC Controller for CNC Drilling Milling. Sale price : $205.70 Category : Tools