Paddle Board Main Fin 7"Wide compatibilityThis sup fin replacement fits most inflatable paddle boards with a slide in fin system. Easy installationWith an ergonomic design and a quick release detachable system, the paddle replacement fins can be easily slid in and secured. No more screws or tools are needed! Premium Materials, Durability, and Flexibility: The nylon construction gives this sup fin stiffness while also being flexible enough. You don't have to worry about