FIN MATERIAL ULTRA-LIGHT. FIN SIZE LARGE (75 - 90Kg / 165 - 200 Lbs). FIN SPECS Base: 4.52" 115.0mm, Depth: 4.67" 119.0mm, Area: 15.71"^2 10137mm^2, Sweep: 33 degrees, Foil: IFT. Ultralight fin with a well balanced template, hydrodynamic foil on the sid
The FCS system (Fin Control System) was designed by Brian A. Whitty in Elanora, Australia, and patented on November 7, 1995. It can be recognized by the 2 tabs on the fins which are designed to fit into a securing plug that attaches the fin to the board.