This is an engraving laser head for CNC machines and 3D printers. You can also download it from the page:
https://optlasersgrav.com/
More information about engraving applications can be found below:
https://optlasersgrav.com/markets
Important note: This file is just a representation of the actual product. The step file can be downloaded from the webpage above. You can also purchase an already manufactured product there.