This is the Shank Fin. I am not sure on the exact measurement, but it is probably around .6" and it has triangle profile instead of average thin profile.
This is the A-wing comes in a variety of sizes starting at .7" This fin will give you better tracking than other fins of the same depth because of the A shape to it. There is also deeper versions of this fin in plastic instead of aluminum.
This is the P wing. There is a variety of sizes starting at .8" These fins will release easier than the A-wings but still give you tracking. There is also Sub VI and Blunt fins that are a little smaller and shorter fins. I could not find a picture of these fins though. Blunts are black and Sub VI are polished with no markings.
Every fin will give you a different ride on the same board. Some people ride finless, some people ride different fins than what came standard on their board, and some people will change fins from set to set to accomplish different things. Choosing the correct fin can help you progress faster. I know I will switch up the fins on my surf depending on what I want to do. You should be able to go into your local shop and they will have or be able to get the fin that you need. Many shops will also have fins that they will rent/demo out. If they don't have fins in stock have them give me a call mon-fri and I will set them up. Please let me know if you have any other questions.
Corey @ Hyperlite
P.S. These are just a few of the fins that I have. I have buckets of old fins and out of production fins. Any time you think that parts no longer exist please have your local shop give me a call, or you can call Corey @ Hyperlite, or you can send me an email at
coreym@hosports.com and I can look around and see if I can find it. The only part I know I don't have is binding overlays for bindings that were made in 2005 and before. Hope this answers a majority of your questions. Thanks.