The AM2 Five fin is a compilation of Al Merrick’s large thruster design with an equally-large quad set-up, best for big-board performance or boards with a wide tailblock. The Techflex material combined with these large templates make this set perfect for board control in powerful waves.
Techflex is stiff like Fiberglass but lighter than Honeycomb. The ultimate in flat foiled fins, great for powerful surfers or powerful surf.
Flat foiled fins break free sooner, and are better ay controlling speed. Often surfers prefer them in fast powerful surf where they do not need to create additional speed. If you have muscle memory from riding glass-ons, flat foiled fins will feel the closest.