Specification Diameter:(Approx.) 40mm Height:(Approx.) 20mm Effective surface of the knife: 30mm diameter Cable length: (Approx.) 2m Including alligator clips
How do use: Connect the wire of this tool check insturment to the tool connector of your Control board of the machine , then the control board's GND connect to the frame of your router ( the frame of the router and the spindle must have connections)