I had a bunch of mirrors left over from some bathroom renovations. Rather than throw them away, I decided to mount them in the garage and in the exercise room. This clip by 'heytiger' was perfect!!! Except my mirrors were too thick (mirrors were 6mm thick, and this design would only accommodate a 3mm mirror) to use them. Rather than scale the clips to be twice as large, I extruded the clip an additional 3mm to fit my mirror to the wall. They are very sturdy and hold the mirrors solidly to the wall.