A replacement fin kit that replaces your outside surf fins if you’ve lost the originals or just need to change the fin size for a different feel behind the boat. Fins change out quickly and easily with a fin key (sold separately). Features Includes 2 Liquid Force 4.4″ Wake Surf Fin Fins Measure: 4.4″ H x 6″ L Asymmetrical Shape For Left and Right Specific Fin Placement ***These fins will Only mount to FCS/bottom mount surf boards.