CNC Engraving Machine Automatic Tool Milling Tool For Tool Setting Description: [Material] This CNC tool set is made of durable PC and metal clip for durability and reliable performance. [ Versatility] This tool setting block is suitable for GRBL and systems, making it suitable for a variety of CNC applications. [Tool Setting Function] It can accurately locate the work surface and is most suitable for PCB engraving. [GRBL ]Setting CNC Router Tools Automatic Tool Setting Instrument. Thickness: 1,6 mm ( 0,03 mm) [Commands] Change commands in Grbl to: G91G21G38.2Z-30F100;G92Z1.6;G0Z5F10 Specification: How to use: 1. The crocodile clamp is a knife. 2. The port was connected to the control board (A5 interface on the control board). 3. Place (pcs. aluminum plate) under the tool. Size Chart: 50 cm/19.69 inch The package includes: 1 setting the CNC router touch tool in the Z axis