DESCRIPTION The AM2 Techflex is the largest thruster design by Al Merrick of Channel Islands Surfboards and its responsive flex pattern make it ideal for high-performance power-surfing in good waves. This fin offers a wider base for drive off of the bottom, more rake to hold powerful carves and a finer tip for release off of the top. CONSTRUCTION TECH-FLEX Techflex is stiff like Fiberglass but lighter than Honeycomb. The ultimate in flat foiled fins, great for powerful surfers or powerful surf. FOIL: FLAT Flat foiled fins break free sooner, and are better at 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. DIMENSIONS SIZE Large (180lb+) (80kg+) SIDE FINS HEIGHT: 4.73" BASE: 4.64" AREA: 15.98" FOIL: FLAT CENTER FIN HEIGHT: 4.49" BASE: 4.63" AREA: 15.32" FOIL: SYMMETRICAL