Specs MEDIUM: BASE: 4.37”/111mm DEPTH: 4.55”/115mm AREA: 14.81”²/9554mm² SWEEP: 33.7° FOIL: INSIDE This is the well-known FCS2 Performer. It can be used in a wide range of conditions, from beach breaks to point breaks, and offers high acceleration, balance, and responsiveness, making it suitable for all-around use. Thank you. Available for sale as a 5-fin set. Type... Fins Fin System/Fin Box... FCS2 Number of Fins... Tri-fin