Premium MaterialThis surfboard fin with the fin base are made of nylon plastic.tough and durable. not easy to damage. It has good wear resistance and impact resistance. and has good water breaking property. The detachable design is adopted. and the interconnecting components fit well with no slop. Unique DesignStreamlined appearance. increase the stability and balance of the surfboard. improve its turning performance. effectively reduce the impact of rocks when rowing. and improve safety. It is very suitable for surfers who like turning. Practical & Easy to InstallThe base is detachable. and the middle fin can be installed on the base through the slide rail and installed with rope. The connecting rope design is not only convenient to carry. but also not easy to lose. safe and practical. convenient disassembly and assembly. time-saving and labor-saving. Wide ApplicationThis central fin is not only suitable for surfboards. but also can be installed on kayaks. canoes and pedal boats. The operation is very simple. Stick the fin base of the surfboard to the rear end of the surfboard. and then insert the fin into the base. You can glue it to the bottom plate of the paddle board with glue. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!