Co2 Laser Mirror 20mm Protective cover

The standard Chinese Co2 mirror mounts come without protective covers. Basically, it's just the mirror itself mounted on a 45 degree plane. This makes alignment pretty hard and bad for the mirrors: one may toast them by putting adheseve paper on their surface.

My cover takes care of this problem: one can put paper/scotch tape on the cover instead of mirror. The protective "tubes" are aligned correctly with mirror center. Also, this cover protects mirrors from dust and dirt.

The cover works