The O'Brien Lambo Fin Series was built for versatility. Whether you're looking for a little extra hold on your skim-style boards or some extra stability as a trailer fin for surf-style performance, the Lambo Fin has got you covered.• Fiberglass-reinforced nylon construction• Lightweight and durable• 50/50 foil enhances stability and control while delivering a smooth feel on the water• Compatible with FCS fin boxes• Lambo 2.1" â 6.54 sq. in.• Sold individually Fiberglass-reinforced nylon construction 50/50 foil enhances stability & control while delivering a smooth feel on the water Sold individually | O'Brien Lambo 2.1 Wakesurf Fin