For a 551x/1680/1665 with a gen or gen-size/style case (MBW/NDT/Yuki, etc), click here
Then, swap the oem pearl in this insert with Ofrei's Ilumines dot (pearl) (usually, Ofrei's dot snaps right in, but, in some cases, it may require a small dab of cement)
For a 168xx with a gen or gen-size/style case (MBW/NDT/Yuki, etc), try this
You would do well to avoid wholesaleoutletxx & Mr. Slimeball's various aliased organizations. He is a pathological liar & they (his organizations) are all rip-offs.