The led Yamaha emblem is just under ½ inch. Here is a pic, sorry it came out blurry.
I took a square of velcro and cut a little hole in the middle of it where the screw is in the middle of the mirror, so it didn't bulge. If you are planing on the led guard inserts I think they are back ordered. I have been waiting about a week for a place to ship a set for my Dad's. Also note if you are getting the emblems I linked to in the prior post, they come from China and will take up to 20ish days to arrive.