Specification: Item Type: 3D Edge Finder Probe Material: Aluminum alloy, tungsten steel Probe Ball Diameter: Approx. 4mm / 0.16in Measurement Direction: X, Y, Z axes Reciprocating Accuracy: 0.01 XY Deflection Range: 0-6 Z Direction Telescopic Range: Approx. 1mm / 0.04in Battery Type: 2 x 3V CR1616 button battery(capacity 50mAh) Feature: STABLE AND HIGH ACCURACY: 3D edge finder probe come with robust sealed housing, possess good structural stability and high accuracy. NO NEED TO ROTATE: The spindle does not need to be rotated when measuring centering, and the centering measurement can make the probe rotate 180 degrees, making the measurement more accurate. WATERPROOF FUNCTION: Support dustproof and a small amount of dripping and waterproofing, do not support long term dripping and washing. CNC POSITIONING AND MEASUREMENT: 3D edge finder probe is widely used in CNC lathes for positioning, measurement, etc., useful and practical. CORROSION RESISTANT MATERIAL: Made of excellent aluminum alloy and tungsten steel material, light weight, possess good strength and good corrosion resistance. Package Included: 1 x Probe 1 x Needle 1 x Storage Box 1 x Needle Storage Box