Auto Focus: Automatically adjust the laser distance. All you have to do is place the item on the base and press the switch. With built-in sensors, it measures the distance between the laser head and the engraved object and automatically adjusts the height to ensure the correct focus Built-in Fan: The fan embedded in the stand blows away the burning smoke and keeps the laser outlet clean. Make sure the machine is working properly Foldable and Portable: It can be folded flat for Easy Carry and Convenient Storage Premium Quality: Made of high quality aluminum alloy, exquisite surface polishing Guarantee: 100% QC has been done. Your purchase is covered by a 12-month warranty. Please contact us if you have any questions NOTICE: This packaging contains only Electric Supporting Stand, does not contain laser unit LaserPecker Electric Supporting Stand, Laser Engraver Accessories Auto Focus Engraving Machine Stander, Auto Laser Distance Adjustment Portable Foldable Stand for L1/L1 Pro