Classic Template Future Fins AM1 Medium This is the M size of the Al Merrick template, not the Rob Machado model. These are the fins that came with the Rob Machado signature board. Many pros recommend AM fins on YouTube. YouTube links below: Pro Yasui, Pro Noro [Surfing] If you're lost about fins, choose this!!! What are the fins praised by top pros? Pro Kawamura [Surfing will change] Pro surfer's fin setup [Surfing footage included] Pro Murata [New FCS Fins] Pros actually test ride 3 different fins! What is the strongest fin chosen by the pros!? Pro Kawabata [Surfing drastically changes] Discussed how to choose fins and their importance with Doru-kun. Pro Tanaka Hideyoshi, Pro Ohno Masatoshi, Pro Nishi Keijiro, and past Grand Champions often use AM fins in their videos. World-class pros like Olympian Leo Inaba, Kanoa Igarashi, and Conner O'Leary also use them in competitions. Recently, Shun Murakami and Hiroto Ohara also used them at the Shonan Open. Both of them performed incredible maneuvers in onshore small waves. They are truly the strongest fins. Explanation from FCS [Industry insider explains] How to choose FCS fins! An important choice to boost surfing and surfboard performance! Why they are suitable for competition [Chiba VS Shonan] The match between young Shonan surfers and top Chiba pros at Naminori Dojo was too exciting. While there are other models with smaller center fins, the AM fins have a laid-back shape and a smaller center fin, which combines drive and smooth release. Please only purchase if you understand that these are stored, inspected, photographed, and packed by an amateur. They are in beautiful condition, but as they are used items, there is no guarantee of performance during use. If you are concerned, please purchase new ones. Thank you for looking.