100% brand new and high quality Material: Plastic and Alloy Color: See pictures See pictures These touch plates make setting your tool height and zeroing your Z-axis a breeze. These are fully functional in Mach 3 and many other CNC controller software. Overall diameter is 1-3/8". Cord is approximately 4ft. long. Cord is attached to plate on one Wire and has an alligator clip on the other to ground the spindle/router and compete the circuit. Other end of wire is ready to be wired as a touch probe into your CNC electronics. Connect the wire of this tool check insturment to the tool connector of your Control board of the machine , then the control Diameter : 3.5 cm/1.38" Effective surface diameter: 25mm/0.98" Thickness : 2 cm/0.79" Cable length : 110 cm/43.3" Quantity: 1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you!