xTool D1 Pro 40W Diode Laser Module 1. The World's First 40W Diode Laser Module with the latest 8*5.5W laser compression technology. 2. The Mightiest Cutting Ability 18mm hardwood cutting in one-pass 15mm black acrylic cutting in one-pass 0.1mm stainless metal cutting in one-pass 3. The Highest Working Efficiency, bringing Brighter Colors to the Engraved Metal. 4. Excellent Heat Dissipation System Ensures the Best Optimal Performance. With the excellent Heat Dissipation system containing a laser fan and the meticulously designed internal structure, the heat generated by the 40W ultra-high laser module can be quickly dissipated and the temperature is controlled to ensure the best optimal processing performance. 5. Fast-assembled with Brand New Design Built-in Air Tube: Plug in the air tube and connect air assist accessories; no need for external adapter parts. Retaining Clip: It is more convenient and quicker to change the laser module. Magnetic Light Shield: Clean and easy to use with plug-and-play magnetic light shield.