FCS Surfboard Fins - FCS II Carver Performance Core Carbon Medium Quad Rear Fin Set - Carbon :: Unisex > Surf Accessories. Area: 12.63\² / 8150mm²Recommended Rider Weight: 65kg - 80kgPlease Note: Designed to be used only with the FCS II Fin System. it will\n not fit in the traditional FCS Dual Plug SystemDesigned for power surfers who like to push hard against their fins and draw out\n their turnsBoard Types: Deep concaves and moderate-to-extreme rockersBase: 4.14\ / 107mmElongated fin for performing long arc turnsHigh degree of sweep angle provides exceptional control off the bottom and when\n carving on the open faceFoil: 50/50Ideal Conditions: Open face. down-the-line waves. particularly good in\n point and reef breaksDepth: 4.21\ / 107mmSweep: 33.2° Size: one size.