Bic FCS M-5 Twin Set

FCS M-5 side fins for stand up paddle boards. Does not come with FCS Screws the FCS Fin Key. The FCS M5 side-bite fins are best used for Bic, aka Tahe Marine, TOUGH-TEC and ACE-TEC stand up boards featuring side fin boxes. Side fins are  optional, for improved surfing performance (not recommended for flat-water use due to increased drag). Fin is 4 1/2 inches tall, base is 4 5/16 inches, made of Polycarbonate.