I purchased this CO2 Laser tube based on the product description, "Cloudray Co2 Glass Laser Tube 700MM 40W Glass Laser Lamp for CO2 Laser Engraving Cutting Machine" As you can see from the picture this tube is neither 700mm or 40W. The label on the tube show is is actually 35w and 720MM. Not a huge difference but the product description on the website should match the actual spec's based on the products label. The web description did not state both the Positive and Negative wires were already connected. I am so glad they are, thank you! Factory connections are usually the best. Very nice tube.
Very good