FIN MATERIAL PERFORMANCE GLASS. FIN SIZE MEDIUM (65 - 80Kg / 145 - 175 Lbs). FIN SPECS Base: 4.65"/118mm, Depth: 4.58"/116mm, Area: 14.96"^2/9652.8mm^2, Sweep: 33.7 degrees, Foil: Flat. Jeremy's fin features a long base and narrow tip. Its perfect for
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.