evo.com | Lib Tech Fins > More fins mean more options which means more fun all around. Get 'em set up as a quad for a sturdy hold on larger waves, or take it down to three for some major speed and precision. However, you like to ride, add the Lib Tech Tri Quad 5 Fin Set to your surf arsenal to switch things up and find your perfect wave. Upcycled Construction Since almost every surfboard in the world is basically an oval shape cut out of rectangular material, Lib Tech is saving the unused corners of their surfboards and making fins out of them. Reinforced Carbon Fiber Biaxial Base Lightweight Hexzylon Fiberfoam Core 5 Fins Tensioned Carbon Fiber Torsion Rods | Lib Tech Tri Quad 5 Fin Set 2027 - Large