3D Edge Finder Locator High Accuracy Edge Positioner for CNC Milling Machine with Battery 6‑30V Item Type: 3D Edge Finder Material: 7075 aluminum alloy, anodized surface Edge Finder Outer Diameter: Approx. 39mm / 1.5in Probe Length: Standard approx. 20mm / 0.8in, user can replace Clamping Diameter: Approx. 6mm / 0.24in Clamping Length: Approx. <20mm / 0.8in Repeat Accuracy: 0.01mm XY Stroke: 3mm, it will be damaged if it exceeds the stroke Z Stroke: 1.5mm, it will be damaged if it exceeds the stroke Offline Work: Yes, can be used as a photoelectric splitter Connection Work: Yes, it can be used with the system for automatic centering Connection Method: Approx. 2 meter / 6.6ft data cable Probe Needle: 1mm diameter tungsten steel probe needle Probe: 1.5mm diameter ruby probe probe Waterproof Grade: IP43, can not work in the environment of coolant spray Battery: 1000mAh lithium battery (automatic charging online, with built in battery)