Future Fins BLACKSTIX V2AM1 Al Merrick Medium Strongest Template AM1 Highest Quality Material Blackstix Inside Foil This is the best combination for average Japanese waves, with the strongest AM1 template used by many competitive surfers, combined with Blackstix material, which is perfectly suited for Japan's powerless waves. Blackstix is not only soft but also has strong rebound, making turns incredibly long. Please refer to the videos below to see how great they are. Especially ① and ② are very easy to understand comparisons of the same template, clearly showing how the surfing changes due to the difference in material. ④ explains the hardness of fins and suitable waves, although it is for FCS. ① THESE FINS WILL CHANGE THE WAY YOU SURF ② Fin Guru Futures Al-Merrick 1 - Same Template, Different Construction // Will they ride differently? ③ Blackstix 4.0 with Brett Simpson and Hughie Vaughan ④ [Pro Surfer Explains] Surfing Changes with Fin Selection Furthermore, the Al Merrick template is used by many professional surfers both domestically and internationally in competitions. Hideyoshi Tanaka, Masatoshi Ohno, Keijiro Nishi, and past Grand Champions often use AM fins in videos. Olympian Leo Inaba even says he only uses AM fins, making them the best fins for competitive surfers. Please refer to the videos below. Explanation from FCS user [Industry Insider Explains] How to Choose FCS Fins! An Important Choice to Instantly Improve Surfing and Surfboard Performance! Why they are suitable for competition [Chiba VS Shonan] A Heated Competition Match Between Young Shonan Surfers and Top Chiba Pros at Naminori Dojo. These are the best fins, combining the highest quality material with the strongest template. I occasionally repaired the grub screw area with resin. Please only purchase if you understand and accept amateur storage, inspection, photography, and packaging. This is a used item with amateur inspection. There may be damage that cannot be identified by an amateur, and I cannot provide any warranty for use, so please purchase a new one if you are sensitive.