I had my lenses for a while and I had a few problems using them with some of my cases, so I modified before using just a washer, buy it looked kind of ugly, so now I modified them using the following,,
Fiber washer from home depot 3/8 id X 5/8 OD
And 7/16 ID X 3/4 OD
The Oem washers that come with the lenses and 3M plastic emblem and Trim Adhesive that I got from auto parts store
First, using a toothpick I added a small amount of adhesive the Fiber washer and set it center on the clear case,after I got it exactly where I wanted it, I added more adhesive thru the inside of the washer, then I added the metal washer that was included with the lenses, I did the same to my DBA case also.
On my otterbox I glued the metal washer to the case from the outside , I could have clean it up a bit but then I got lazy lol
Hope this helps
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