Summary

Fits all 30x30mm laser housings.

Blows away the smoke.
This keeps the lens of the laser clean and the work result is better.
Is adjustable in height.
Distance of the focus point should be more than 35 mm.
The standard 50x15mm radial fan fits.
You need 4 pieces of M3 nut and M3x10 screws.

Fix it well and make sure everything is tight before you start lasering