Check the listing for details. 6mm-NC V6 3D Edge Finder Touch Probe Edge Finder Precise CNC Probe Fit for GRBL. Condition: New. Listed at 69.25 USD. Description 6mm-NC V6 3D Edge Finder Touch Probe Edge Finder Precise CNC Probe Compatible with MACH3 and GRBLDescription:- The three-coordinate probe can realize quick centering, edge finding, center finding, shape measurement and other functions by connecting the CNC to the knife edge, which greatly solves the trouble of positioning the work-piece during the second clamping during the machining process.- The shell is made of fine frosted black oxidized aluminum alloy with a flat surface anti-roll design.- It adapts to various control panels such as GRBL control panel and Mach3.Package Included:- 1 x 3D Touch Probe- 1 x Storage Box- 1 x CableFAQ:Q: Need to turn on the spindle speed?A: No.Q: How to distinguish the three wires?A: The red wire is VCC, the black wire is GND, and the white wire is IO.Q: Why is the concentricity different every time the probe is installed?A: Because your ER chuck spring clip cannot guarantee 100% uprightness. Every time the probe is installed, even if the concentricity is adjusted to 1 wire, there will still be deviations when the probe is removed and installed again. So your chuck is best to buy AAA and above accuracy (concentricity