I have one of these Amazon Special 4-A Dupe and it is made just as well (as far as I can tell) as my actual True Ames. Great option for when you need an odd size fin that you can't use on any of your other boards. Normally I'd say support True Ames as they have been nothing but good to me, but the board this goes in was purchased for 110 dollars so it felt insane to spend nearly that much on a fin.