This is a step file of the Opt Lasers 6 W Engraving Laser Head. This laser head can be mounted on a 3D Printer to transform it into a 3D laser printer engraver. The file can also be downloaded from the following page: https://optlasersgrav.com/ Moreover, in order to check the specifications for this laser head, you can click the following link: https://optlasersgrav.com/uspot-laser-head#