BLACKFIN SX Hard Center Fin (US Fin Box)
BLACKFIN SX Hard Center Fin (US Fin Box), Delivering a powerful combination of tracking and maneuverability, the BLACKFIN SX Center Fin is compatible with older model BLACKFIN boards (2019 and prior), BLACKFIN MODEL SX, and with other non-iROCKER paddle boards that feature a US fin box.