Description: Features: brand new and high quality High-precision measurement tool that can quickly and easily set mechanical spindle and workpiece datum exact center position. Accuracy and reproducibility of competent drilling, milling, boring and grinding jigs, etc. The precision positioning work. Unplug finder's pins, the spring can be replaced. Edge finder's role is to determine the position of the workpiece on the machine, which determine the working coordinate system. Applies to traditional milling machines and machining centers. With the speed 400-600rpm use. Specially designed probe 4mm, provide for a small aperture is narrow trench and measured using. The lower end of the rotation part is magnetically shielded. High strength and hardness. Durable in use. Specification: Material: Steel Dimensions: approx. 90x18mm(3.54x0.71in) Probe diameter: approx. 4mm(0.16in) Shank diameter: approx. 10mm(0.39in) Color: Silver&Black Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch With retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Edge Finder 1 x Storage Box