Features: 1.CNC Z-Axis router mill touch plate Mach3 tool setting probe new milling hot kit. 2.CNC router engraving Mach3 machine tool setting auto-Check instrument 1.38inch 3.CNC router mill: Z-Axis tool setting touch plate works w/ Mach3. 4.Bottom insulation knife block: suitable for processing woodworking, acrylic, plastic, iron, steel and other materials. 5.The tool setting device is mainly composed of a tool setting block and a feeler gauge to determine the relative position of the clamp to the cutter. Description: 1.This tool is effective for you to set Z-Axis height, zeroing and fine-tune the z-axis. 2.It functions well within many CNC management software, as Mach 3, gbrl Control etc. . Specifications: Product name: MACH3 Cutter Aligner Product use: various engraving machines Knife surface: diameter 25mm Line length: 1.2m Specification: knife setting block (with double wire) Power mode: AC Use: suitable for processing wood, acrylic, plastic, aluminum, iron, steel and other materials Package Included: 1 * MACH3 Cutter Aligner Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.