It is really small and pretty.

You can install a 2.1W mini laser on any compact CNC router, including Cubify. It can be easily
installed without an additional mount.
It has an actuator to control Z axis responsible for the focus length. Now you can easily adjust it
to use the full capacity of the laser power while cutting or engraving.The Z axis actuator is to
increase the cutting depth on 2D machines like the DIY…. otherwise, better to use the 3D
printer’s.

That one is intended to go on the DIY frame only. It does not have a protection diode or 24V
capability.
The size of a 2.1W Endurance L-Cheapo laser is 2.1 x 1.3 x 1.3 inches.

The Endurance L-Cheapo is really a practical solution in the market of laser engraving and
cutting.