Good quality 100% brand new and high quality. Sturdy and durable Solid alloy material, sturdy and durable for use. High efficiency Greatly improve precision, save time and Convenient for operation. Easy to install and use It is easy to install and use. High precision, smooth surface, exquisite design. Convenient Convenient and useful tool for engraving machine. Specification: Condition: 100% brand new Material: Alloy Color: black + red Product Size: Approx. 35 * 19.5mm / 1.4 * 0.77 inch Package Weight: Approx. 53g Package included: 1 x engraving machine How to use: Connect the wire of this tool control tool to the tool connector of your machine control board, then the GND of the control board connects to the chassis of your router (the router chassis and pin must have connections)