Laser attachment

i wanted to make something that would ensure that the laser didn't move when printing and would be in the same place every time i put it on the 3D printer. i wanted something simple. so this is what i came up with, i had to modify a 1/4-20 screw to fit in the laser and the other 4 holes are there to let the magnets that came with the laser still stick to the metal fan casing around the extruder. i put this on my stock CR-10s. its a very simple part. but works pretty well.