Liding plate, wide electrical and mounting compatibility. Utting performance and gets clean-cut edges. Input cable and air tube appear orderly through fixed bayonets. Prepare a replaceable protective lens for your use. Warmly welcome you, my dear friend!Ensure you are clear about the product specification, datasheet, and operating instructions before usage. Protect your yourself from the laser when you operate on it. Ensure your safety during operating when power connected.