Premium Material This surfboard fin and fin base are made of nylon plastic, providing toughness and durability. It offers good wear resistance, impact resistance, and hydrodynamic performance. The detachable design ensures secure fit with no slop between connecting components. Unique Design Streamlined shape enhances surfboard stability and balance, improves turning performance, and helps reduce impact from underwater obstacles, increasing safety. Ideal for surfers who enjoy maneuverable rides. Practical and Easy to Install The base is detachable. The center fin attaches to the base via a slide rail and is secured with a connecting rope. The rope design prevents loss, is easy to carry, and allows for quick, tool-free assembly and disassembly. Wide Application This center fin is suitable for surfboards and can also be installed on kayaks, canoes, and pedal boats. Installation is simple: attach the fin base to the tail end of the board, then insert the fin into the base. For paddle boards, the base can be glued to the bottom deck using adhesive.