FIN MATERIAL PERFORMANCE CORE CARBON. FIN SIZE MEDIUM (65 - 80Kg / 145 - 175 Lbs). FIN SPECS TRI SET SIDE Base: 4.37" / 113mm, Depth: 4.89" / 124mm, Area: 15.78"² / 10180mm², Sweep: 32.1 degrees, Foil: Flat. TRI SET CENTRE Base: 4.38" / 111mm, Depth: 4
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.