FCS2 tri-fins, Performer, size M. This is a 5-fin set, so you can use it as a tri-fin or a quad. It has all-around performance and is characterized by its balance, which allows it to handle any wave. It combines both maneuverability and stability, so it is widely recommended for beginners who want to start shortboarding and intermediate surfers who want to improve their turns. These are the right fins to maximize the potential of your board. Please consider this opportunity. #FCS2 #FCS #Performer #Surfing #Surfboard Fins #Fins #Tri-fins #Quad Fins #Quad Fins #Shortboard #Surfboard #Surf Gear Fin System/Fin Box...FCS2 Type...Fins Number of Fins...Five Fins (5FIN) Fin Material...Glass Flex Model Name...FCS II Performer